Construction Intelligence Center

Break-even Calculator

Free break-even calculator: find how many units and how much revenue you need to cover fixed costs, contribution margin per unit, and units needed for a target profit.

Cash Conversion Cycle Calculator

Free cash conversion cycle calculator: days sales outstanding, days inventory outstanding, days payables outstanding and the CCC — plus the cash tied up in working capital.

Depreciation Calculator

Free depreciation calculator: yearly depreciation and book value under the straight-line and written-down-value methods, with a full schedule for any asset.

Discount Calculator

Free discount calculator: final price after a percentage discount, amount saved, and the true effective discount when two discounts are stacked.

LTV to CAC Calculator

Free LTV to CAC ratio calculator: customer lifetime value from revenue, gross margin and churn, customer acquisition cost, LTV:CAC ratio and CAC payback months.

Markup Calculator

Free markup calculator: get the selling price, profit and resulting margin from cost and markup %, plus the markup you need to hit a target margin.

Percentage Calculator

Free percentage calculator: find X% of Y, what percent X is of Y, and the percentage increase or decrease from X to Y — all at once, with formulas.

Profit Margin Calculator

Free profit margin calculator: enter cost and selling price to get gross profit, profit margin percentage and markup percentage, with the formulas explained.

Profit Margin vs Markup — The Difference That Changes Your Prices

The difference between profit margin and markup, the formulas, a conversion table (25% markup = 20% margin) and why pricing on the wrong one loses money.

ROI Calculator

Free ROI calculator: total return on investment, net profit and annualised ROI for any amount invested and returned over a period — for projects, equipment, marketing or shares.

A Contractor's Guide to Retention Money and Cash Flow

Retention money protects the client but locks up contractor capital for months.

Construction Finance Cost Calculator — Project Loan Interest & Delay Cost

Calculate planned vs. actual construction finance interest cost, and the additional financing cost a construction delay adds — for real estate developers and other project owners financing construction.

Construction management software in India: an honest shortlist

Onsite, Powerplay, TallyPrime, ERPNext and Rebota for Indian contractors: BOQ, RA bills, labour, GST and price for 5 users. Prices checked Oct 2026.

Construction Project Cash Flow Calculator

Project your cash flow across billing, retention and payment cycles.

CRM Software for Contractors & Project-Based Businesses

Lead-to-customer pipeline tracking connected to the same ledger as your projects — not a separate sales tool disconnected from execution data.

Hidden Profit Loss Calculator — Where Contractors Lose Margin

A single calculator estimating total hidden profit leakage across material, labour, equipment and billing.

How Indian Contractors Lose Profit Without Noticing

Most construction businesses in India lose 5-12% of turnover to leaks spread across material, labour, equipment and cash flow.

MSME Delayed Payment Interest Calculator

Calculate interest owed under the MSME Act for delayed client payments.

Project Profit Calculator for Contractors

Calculate real project profit after hidden cost leakage.

Project Profitability Tracking Software for Contractors

Real project margin, rolled up from actual labour, material, and equipment cost data — never fabricated, shows null when data is insufficient rather than guessing.

RA Billing & Invoicing Software for Contractors

Running Account bills generated from certified BOQ quantities, with retention posted to its own ledger line — not just a stored percentage on the bill header.

Rebota vs Busy Accounting Software for Contractors

Busy is a widely-used Indian accounting and inventory tool for GST compliance. Here is what it was never built to track for construction site and project management — and how Rebota fills that gap.

Rebota vs Excel + WhatsApp

An honest comparison of managing construction projects with Excel and WhatsApp versus Rebota.

Rebota vs Marg ERP for Contractors & Trading Businesses

Marg ERP is a well-known Indian inventory and distribution management tool, strong in pharma, FMCG, and general trading. Here is how it compares to Rebota for construction, contracting, and project-based businesses.

Rebota vs Odoo for Construction & Project Businesses

Odoo is a flexible, modular open-source ERP that can be configured for almost anything — including construction — with enough development effort. Here is how that compares to a system built for the industry out of the box.

Rebota vs SAP for Construction & Contracting Businesses

SAP is the enterprise ERP standard — built for large, complex organizations with dedicated IT teams. Here is how it compares to Rebota for mid-market Indian contractors and project businesses.

Rebota vs Tally for Construction Businesses

Tally handles accounting well. Here is what it was never built to do for construction site and project management.

Rebota vs Traditional Construction ERP

How Rebota compares to heavyweight enterprise construction ERP systems for Indian SMB contractors.

Rebota vs Zoho Books for Construction Businesses

Zoho Books is a strong GST accounting tool built for Indian SMBs. Here is what it was never built to track on a construction site — and how Rebota fills that gap.

Retention Money Calculator for Construction Contracts

Calculate retention money withheld and its cash flow impact.

Service Desk & Ticket Management Software

Service tickets that convert directly into invoices — for businesses running maintenance, AMC, or field-service operations connected to real billing.

Tally alternatives: an honest shortlist

Which Tally alternative actually fits — Zoho Books, Busy, Marg, Vyapar, Odoo or a full ERP. What you lose by leaving Tally, what migration really involves, and who should simply stay.

Working Capital Calculator for Construction Contractors

Calculate working capital required per project size and cycle.

GST billing software: what to check before you buy

E-invoicing thresholds, IRN and who really generates it, GSTR-2B reconciliation, and the Rule 3(1) audit trail most shortlists never ask about — a straight guide to choosing GST billing software in India.

Bar Bending Schedule (BBS) Calculator

The most complete BBS calculator for Indian construction — all IS 2502 shapes, IS 456 development lengths, cutting optimisation, and export to CSV / PDF. Free, instant, accurate.

BOQ software: what it must actually do

A straight guide to bill of quantities software — what separates real BOQ software from a spreadsheet with headings, the questions that expose a weak one, and how measurement, variations and retention should actually work.

Construction ERP software: how to choose one

What construction ERP must do that a generic ERP cannot — measurement, retention, subcontractor bills, labour and material against a BOQ — and the questions that expose a system that has been relabelled rather than built.

Construction Equipment Fuel Cost Calculator

Calculate fuel cost leakage across owned and hired machinery.

Equipment Cost Calculator — Owned vs Hired

Compare true owned vs hired equipment cost per project.

Equipment Depreciation — WDV vs Straight Line for Contractors

Which depreciation method Indian contractors actually use for owned plant and machinery, how it affects true hire-rate comparisons, and Income Tax Act rates.

Equipment Depreciation Calculator for Contractors

Calculate depreciation on owned construction equipment the way Indian contractors actually use it.

Equipment Maintenance & CMMS Software for Contractors

Preventive and corrective maintenance tracking for owned equipment — connected to fleet and project cost data, not a standalone maintenance log.

Equipment Utilization Calculator

Find out how much idle equipment time is costing your project.

Fleet & Equipment Management Software for Construction

Vehicle and equipment dispatch, trip logging, fuel cost, and driver coordination — connected to the same project ledger as everything else Rebota tracks.

Fuel Cost Leakage — What Owned and Hired Machinery Both Hide

Diesel theft, idling time, and unmetered generator runtime routinely eat 8-15% of fuel budgets on Indian construction sites. How to catch it before it compounds.

OEE Calculator — Overall Equipment Effectiveness for Manufacturing

Calculate OEE (Availability x Performance x Quality) for any production line or machine, per the ISO 22400 / SEMI E10 standard method, with root-cause diagnostics for each loss category.

Owned vs Hired: The Utilization Number That Should Decide It

Most contractors decide owned vs hired equipment once, at purchase, and never revisit it.

Working Capital Planning for Construction Contractors

How much working capital a project actually needs across mobilisation, billing cycles, and retention — and why undercapitalised projects stall mid-way.

GST Calculator — Construction Works Contract & Material Supply

Calculate GST for construction works contracts (12%/18%), material supply, and services with CGST/SGST/IGST split.

GST Input Tax Credit (ITC) Calculator for Contractors

Calculate GST ITC you may be leaving unclaimed on construction purchases.

GST Late Payment Interest Calculator

Calculate interest liability on delayed GST payments.

GST on Construction — Complete Guide for 2024

A working guide to GST on Indian construction: works contract rates, HSN codes for materials, RCM, Input Tax Credit eligibility, and GSTR-3B filing for construction companies.

GST Returns & Compliance Software for Construction Companies

GSTR-1 auto-generation from invoices, GSTR-2B reconciliation, and ITC ledger tracking — connected to the same billing data as your projects.

GSTIN Checker (GST Number Check)

Check a GST number: 15-character format, state code, PAN and holder type, entity number and the check digit, plus a lookup of the legal name and status.

HR & Payroll Software for Construction Companies

Salary structures, statutory PF/ESIC/PT compliance, payslip generation, and leave management — built for construction and project businesses, separate from site labour attendance.

HSN Code Finder & SAC Code List

Search 21,928 HSN codes for goods and 681 SAC codes for services by name or number, from the official GSTN HSN/SAC master.

TDS Calculator FY 2026-27 — Section 393 Rates & Thresholds

Free TDS calculator for FY 2026-27 under section 393 of the Income-tax Act 2025: contractor (old 194C), professional fees (194J), rent and no-PAN rates.

TDS on Contractor Payments — Section 194C Explained

When Section 194C applies, the 1% vs 2% rate split, PAN and threshold rules, and the most common TDS deduction mistakes contractors make when billing clients.

Why GST Input Tax Credit Gets Missed on Construction Sites

Eligible GST input tax credit on material and service purchases goes unclaimed more often than contractors realize.

EOQ Calculator — Economic Order Quantity

Free EOQ calculator: optimal order quantity with the Wilson formula √(2DS/H), orders per year, total ordering and holding cost, and the reorder point for your lead time.

Import Landed Cost Calculator

Free import landed cost calculator for India: assessable value, basic customs duty, social welfare surcharge, IGST and the true landed cost per unit, with and without input tax credit.

Inventory Turnover Calculator

Free inventory turnover calculator: turnover ratio from cost of goods sold and average inventory, plus days inventory outstanding (DIO) for any period.

IS 1786 — TMT Bar Grades Explained (Fe415 vs Fe500 vs Fe550)

What the TMT bar grade number actually means, when a structural engineer specifies Fe500D over Fe500, and how grade choice changes bar weight and cost.

IS 383 — Aggregate Grading Checks Every Site Engineer Should Run

Sieve analysis, silt content, and flakiness index explained in plain terms, with the acceptance limits site engineers actually need to remember, per IS 383.

IS 456:2000 — Plain English Guide for Site Engineers

The most important clauses in IS 456:2000 explained for working engineers: cover requirements, development length, mix design, curing, and acceptance criteria.

Attendance Leakage — What Buddy Punching Actually Costs a Site

Ghost wages from proxy attendance and unverified headcounts quietly inflate labour cost. A practical look at how much it adds up to and how to catch it.

Attendance Leakage Calculator — Ghost Wages Estimator

Estimate wages lost to attendance leakage and buddy punching on site.

EPF / ESIC Calculator — Employee & Employer Contribution

Calculate EPF (12%) and ESIC (employer 3.25% / employee 0.75%) contributions for construction workers and staff.

Labour Laws for Construction Companies — India Compliance Guide

BOCW Act, CLRA Act, EPF, ESIC, and minimum wages explained for Indian construction companies — what every contractor must comply with, and the practical compliance checklist.

Labour Productivity Calculator for Construction Sites

Measure labour output against Indian construction productivity benchmarks.

Labour Productivity: The Metric Most Contractors Never Track

Attendance gets tracked closely. Output against planned quantity almost never does.

Overtime Cost Calculator for Construction Labour

Calculate true overtime cost across your workforce.

Quality Control & Safety Management Software for Construction

NCR tracking and safety checklists connected to site logs and specific BOQ work items — not a separate compliance binder disconnected from execution.

Site Management & Daily Progress Tracking Software

Daily site logs, labour attendance, and progress photos that feed directly into the Measurement Book and BOQ — replacing WhatsApp updates nobody can search or report on.

BBS Height Calculator

Heights in a bar bending schedule: crank height and chair height in slabs, and column bar length per floor with the IS 456 compression lap. Worked example.

Bend Deduction Calculator

Bend deductions for a bar bending schedule — 1d at 45°, 2d at 90°, 3d at 135°, 4d at 180° — and the cutting length of any bent bar from its dimensions.

BOQ & Estimation Software for Construction Contractors

Line-by-line Bill of Quantities against budget, connected to procurement, site execution, and RA billing — not a static spreadsheet nobody updates after the tender.

Brick Calculator

How many bricks, cement bags and sand a brick wall needs, for modular or standard bricks, 9-inch or 4.5-inch walls, with openings, wastage and cost.

Cement Bag Calculator — Concrete, Plaster & Brickwork Mortar

Calculate exact cement bags needed for concrete, plastering, and brickwork mortar per IS 456:2000 and CPWD DSR consumption norms.

Cement Wastage Calculator — Find Your Hidden Material Loss

Calculate cement wastage on your site against Indian industry benchmarks and see the annual profit impact.

Concrete Grade Selection — M20 vs M25 vs M30, When to Use What

How Indian structural drawings assign concrete grades, why over-specifying grade quietly inflates cement cost, and how to verify BOQ quantities against IS 10262.

Concrete Mix Calculator

Cement bags, sand, aggregate and water for M5 to M25 concrete by volume — nominal mix ratios, dry volume factor 1.54, results in m³, cft and brass.

Concrete Volume Calculator — Cement, Sand, Aggregate Quantity (IS 10262)

Calculate concrete volume and exact cement, sand, aggregate, and water quantities for any grade (M10-M35) per IS 10262:2019 mix ratios.

Crank Bar Cutting Length Calculator

Cutting length, number and weight of crank (bent-up) bars in slabs: clear span, Ld anchorage, 45° cranks and bend deductions, with a worked example.

Development Length Calculator — IS 456:2000 Clause 26.2.1

Calculate reinforcement development length (Ld) per IS 456:2000 for tension and compression bars, any diameter and grade.

E-commerce Order Management Software

Orders that connect directly to inventory and invoicing — for trading and retail businesses that need stock, billing, and order data on one ledger.

Excavation Calculator

Excavation volume for footing pits and trenches with working space and side slopes, loose volume after swell, truck loads and cost at your rates.

Inventory & Warehouse Management Software for Contractors

Material receipt, stock ledger, and warehouse tracking connected to BOQ consumption — so site-level material reconciliation isn't a separate manual exercise.

Inventory management software: how to evaluate one properly

The questions that separate real inventory software from a stock register — valuation method, batch and serial traceability, whether stock has one answer or several, and what a stock ledger must actually record.

Lap Length Calculator

Lap length of reinforcement bars per IS 456:2000 Clause 26.2.5.1 for flexural tension, direct tension and compression — any bar, steel and concrete grade.

Manufacturing & Production Order Software

Production orders connected to inventory and warehouse stock — for fabrication and manufacturing businesses that need material consumption tracked against what is actually produced.

Material Price Escalation Calculator

Track how material price movement is eating into your project margins.

Plaster Calculator

Cement bags and sand for wall and ceiling plaster: 6, 12, 15 or 20 mm thickness, 1:3 to 1:6 mix, in m² or sq ft, with wastage and cost at your rates.

Purchase Requisition to Payment: The Cycle Most Contractors Skip

Most construction procurement jumps straight from "we need material" to a WhatsApp message to a vendor. Here is the full PR-to-payment cycle, why each step exists, and what breaks when one is skipped.

Raw Material Yield Calculator — Good Output vs. Theoretical Standard

Calculate raw material yield (good output vs. theoretical output), scrap rate, and the material-cost impact of the yield gap — for manufacturing, process, and agri-processing operations.

Rework Cost Calculator for Construction Projects

Calculate the true cost of rework and quality rejection on site.

Shuttering Calculator

Shuttering (formwork) contact area for columns, beams, slabs and footings in m² and sq ft, plywood sheets needed and cost at your rate per sq ft.

Steel Consumption Calculator for Construction Projects

Estimate steel consumption and wastage per BOQ against Indian benchmark rates.

Steel Wastage — Cutting Optimisation for TMT Bars

Standard TMT bar lengths are 12m, but real cutting lists rarely divide evenly. A practical method for minimising off-cut wastage across a bar bending schedule.

Steel Weight Calculator — TMT Bar Weight per Meter (IS 1786)

Calculate TMT steel bar weight per IS 1786:2008 unit weight formula for any diameter 6mm to 32mm, with total weight, cost, and wastage.

Stirrup Cutting Length Calculator

Cutting length, number and weight of rectangular stirrups for beams and columns, with 135° hooks and IS 2502 bend deductions. Worked example included.

The Real Cost of Material Wastage on Indian Construction Sites

Cement, steel and other bulk materials routinely run 2-4 points above Indian benchmark wastage.

Tile Calculator

How many tiles and boxes you need for a floor or wall: 1×1 ft to 4×4 ft tiles, in metres or feet, with wastage, deductions and cost per sq ft.

Vendor & Procurement Management Software for Contractors

Requisition to RFQ to purchase order, with vendor bank details encrypted and every PO traceable back to a BOQ line — not a disconnected purchasing spreadsheet.

Manufacturing ERP software: how to evaluate one

Discrete or process, routings with honest setup and run times, traceability that survives a recall, and costing that settles against standard — the questions that decide manufacturing ERP, and where each product actually stops.

CAGR Calculator — Compound Annual Growth Rate

Free CAGR calculator: find the compound annual growth rate between a start and end value, absolute return, inflation-adjusted CAGR and year-by-year growth.

EMI Calculator — Loan EMI with Amortization Schedule

Free EMI calculator for home, car, personal and business loans: monthly EMI, total interest, processing fee, prepayment savings and a year-by-year amortization schedule.

FD Calculator

Free fixed deposit calculator: maturity amount and interest earned for any deposit, rate and tenure with quarterly, monthly, half-yearly or yearly compounding.

Home Loan Eligibility Calculator

Free home loan eligibility calculator: the maximum loan and EMI you qualify for from your income, existing EMIs, interest rate, tenure and the bank's FOIR limit.

How EMI Is Calculated — and How Prepayment Cuts Your Interest

How loan EMI is calculated: the reducing-balance formula, a ₹25 lakh home loan example, why early EMIs are mostly interest, and how prepayment saves lakhs.

How SIP Returns Are Calculated — The Formula Behind Every SIP Calculator

How a SIP calculator works: the future-value formula, XIRR, step-up SIPs and what ₹5,000 or ₹10,000 a month becomes over 10, 15 and 20 years.

Lumpsum Calculator

Free lumpsum calculator: future value of a one-time investment at an expected annual return, total gains and a year-by-year growth table.

NPS Calculator

Free NPS calculator: estimate your National Pension System corpus at 60, the tax-free lump sum and the monthly pension from the annuity.

PPF Calculator

Free PPF calculator: maturity value, total interest and year-wise balance for yearly Public Provident Fund deposits over 15 years (or extended), with annual compounding.

RD Calculator

Free recurring deposit calculator: maturity value and interest for a monthly RD with quarterly compounding, the method used by SBI, post office and most Indian banks.

Retirement Calculator

Free retirement planning calculator: the corpus you need to retire, adjusted for inflation, and the monthly investment required to build it.

Simple Interest Calculator

Free simple interest calculator: interest and total amount for any principal, rate and time in years, months or days, compared with compound interest.

SIP Calculator

Free SIP calculator: see the future value of a monthly mutual fund SIP, total invested, estimated gains and a year-by-year table — with optional annual step-up.

SWP Calculator

Free SWP calculator: how long your corpus lasts with a fixed monthly withdrawal, the final balance, total withdrawn and a yearly balance table.

Affordable ERP software in India: what each one really costs a small business

Affordable ERP software in India with real yearly costs for 5 and 15 users: Odoo, Zoho ERP, ERPNext, Tally, BUSY, Marg, Logic ERP and Rebota.

Best ERP for manufacturing in India: which one fits your factory

Best ERP for manufacturing in India, grouped by factory type with listed prices: Tally, BUSY, Zoho ERP, Odoo, ERPNext, SAP B1, Logic ERP, Marg and Rebota.

Best software for insurance agents in India: which one fits how you sell

Insurance agent software in India compared from each maker's own pricing page: Agenex, Insuorg, InsuranceDesk, TatvaCRM, IMD.Mitra, SAIBAOnline and Rebota.

BUSY alternatives: what to move to, and when to stay

Alternatives to BUSY accounting software, picked by why you are leaving: remote access, your CA, cloud, or operations BUSY does not run. With real prices.

ERP for distributors and wholesalers in India: an honest shortlist

ERP for Indian distributors and wholesalers, from makers' own pages: Tally, BUSY, Marg, Zoho, Odoo, Logic ERP and Rebota, with schemes and batches.

Free accounting software in India: what is free, and where each one stops

Free accounting and GST billing software in India, and the catch in each: revenue caps, invoice limits, no GST features or one device. Checked Oct 2026.

Marg ERP alternatives, and the cases where Marg is still the right call

Alternatives to Marg ERP 9+ for chemists, distributors and traders: BUSY, Tally, Zoho Books, Vyapar and Rebota, with Marg's own prices and ARC compared.

Odoo alternatives: where to go, and when Odoo is still right

Odoo alternatives for Indian businesses: ERPNext, Zoho ERP, Business Central, SAP Business One and Rebota, with per-user prices and when to stay on Odoo.

Odoo vs ERPNext: two open-source ERPs, two very different bills

Odoo vs ERPNext compared on cost for 20 users, licence (open core vs GPL), hosting, Indian GST setup and who should run each. Prices checked Oct 2026.

QuickBooks alternatives in India, now that QuickBooks has gone

QuickBooks left India in 2023. The alternatives that handle Indian GST, e-invoicing and e-way bills: Zoho Books, Tally, Odoo and Rebota, with prices.

Retail billing and ERP software in India: an honest shortlist for shops

Billing and ERP software for Indian shops, from makers' own price pages: Vyapar, myBillBook, GoFrugal, Marg, Zoho, Tally, BUSY and Rebota.

SAP Business One alternatives in India, and when SAP B1 is still the right choice

SAP B1 alternatives in India: Business Central, NetSuite, Odoo, Zoho ERP, ERPNext, Tally and Rebota, with listed prices and when SAP still fits.

Tally vs BUSY: which one fits your business in 2026

TallyPrime vs BUSY: price (₹22,500 vs ₹16,500 one-time), multi-user cost, GST, batch and serial stock, and what your CA will prefer. Checked Oct 2026.

Tally vs Marg ERP: which suits a chemist, a distributor or a trader

TallyPrime vs Marg ERP 9+: licence and yearly costs from both price lists, pharma and distribution features, multi-user cost, and what your CA will prefer.

Tally vs Zoho Books: licence or subscription, worked out in rupees

TallyPrime vs Zoho Books: one-time licence or cloud subscription? Three-year costs from both price lists, GST, stock, users and your CA's view.

The best accounting software in India, by the kind of business you run

Best accounting software in India by business type: Tally, Zoho Books, BUSY, Marg, Vyapar, myBillBook and more, with real prices and who each one suits.

The best ERP software in India, and who each one is actually for

Best ERP software in India for 2026: Zoho ERP, Odoo, ERPNext, SAP Business One, Business Central, Tally and Rebota, with real prices and who each suits.

Vyapar alternatives for when the business outgrows phone billing

Vyapar alternatives for shops and businesses that outgrew phone billing: myBillBook, Zoho Books, Tally, BUSY and Rebota, with prices and when to stay.

Zoho Books alternatives: pick by the reason you are leaving

Zoho Books alternatives for Indian businesses, picked by why you leave: free limit, more users, batch stock, a CA on Tally, or operations. Real prices.

Australia GST Calculator

Australian GST calculator: add 10% GST or work out the GST inside a GST-inclusive price (divide by 11). Net, GST and total instantly.

Australia Pay Calculator 2026-27 — Take-home Pay

Australian take-home pay for 2026-27: income tax with the new 15% rate, Medicare levy, low income tax offset and 12% super — weekly, fortnightly and monthly.

Canada GST/HST Calculator

Canada GST/HST calculator: add or remove 5% GST or 13%, 14% or 15% HST by province. Net, tax and total instantly, with the reverse formula.

Canada Salary Calculator 2026 — Take-home Pay

Canadian take-home pay for 2026: federal tax with the new 14% rate, CPP, CPP2, EI and your provincial tax — per paycheque, month and year.

CTC vs In-hand Salary — Where the Difference Goes

Why your in-hand salary is lower than CTC: employer PF, gratuity, employee PF, professional tax and income tax explained with a ₹12 lakh worked example.

Employee Cost Calculator

Free employee cost calculator: the full monthly and annual cost of an employee — salary, employer PF, ESI, gratuity, insurance and overheads — and the multiplier over gross pay.

Germany VAT (MwSt) Calculator

German VAT (Mehrwertsteuer) calculator: add or remove 19% or 7% MwSt. Net, VAT and gross amounts instantly, with the correct reverse formula.

Gratuity Calculator

Calculate gratuity under the Payment of Gratuity Act 1972: 15 days' last drawn basic + DA per year of service ÷ 26, rounding rules and the ₹20 lakh tax-free limit.

GST 2.0 — New Rates and How to Calculate GST

The GST 2.0 slabs (5%, 18%, 40%) in force since 22 September 2025, how to add or remove GST, CGST/SGST vs IGST, and what changed for cement and construction.

How to Calculate VAT — Adding and Removing VAT the Right Way

How to add VAT to a price and remove VAT from a VAT-inclusive total, with the VAT fraction for 5%, 15% and 20% and worked UK, UAE and Saudi examples.

HRA Exemption — How to Calculate It Correctly

How HRA exemption is calculated under Section 10(13A): the three-way minimum rule, metro vs non-metro, rent receipts, landlord PAN and worked examples.

HRA Exemption Calculator

Calculate your HRA exemption under section 10(13A): least of actual HRA, rent paid minus 10% of basic, and 50% (metro) or 40% of basic. See exempt and taxable HRA instantly.

Income Tax Calculator FY 2026-27 (New Regime)

Income tax calculator for FY 2026-27 (AY 2027-28) under the new regime: ₹75,000 standard deduction, nil tax up to ₹12 lakh, surcharge and 4% cess.

Income Tax Slabs FY 2026-27 — New and Old Regime Explained

Income tax slabs for FY 2026-27 (AY 2027-28) under the new and old regime, the ₹12 lakh rebate, standard deduction, cess and worked examples.

Malaysia SST Calculator

Malaysia SST calculator: add or remove 10% or 5% sales tax, or 8% or 6% service tax. Net, tax and total amounts instantly.

NZ GST Calculator

New Zealand GST calculator: add 15% GST or find the GST inside a GST-inclusive price (multiply by 3/23). Net, GST and total instantly.

Old vs New Tax Regime Calculator FY 2026-27

Compare income tax under the old and new regimes for FY 2026-27 with 80C, 80D, HRA, home-loan interest and NPS deductions, and see which saves more.

Salary Calculator — CTC to In-hand

Convert CTC to monthly in-hand salary for FY 2026-27: employer and employee PF, gratuity, professional tax and new-regime income tax, with a breakdown.

Sales Tax Calculator

Free sales tax calculator: add state and local sales tax to a price, or reverse-calculate the pre-tax price from a total. Works for any US state or any sales-tax rate.

Saudi Salary & GOSI Calculator

Saudi Arabia salary calculator: net pay after GOSI for Saudi nationals, employer GOSI cost and end-of-service award under the Saudi Labour Law.

Saudi VAT Calculator

Saudi Arabia VAT calculator: add 15% VAT or extract VAT from a VAT-inclusive price in SAR. Formula, zero-rated supplies and ZATCA registration rules.

Singapore GST Calculator

Singapore GST calculator: add 9% GST to a price or extract GST from a GST-inclusive amount. Formula, the 9/109 fraction and registration threshold.

Singapore Salary Calculator — Take-home Pay & CPF

Singapore take-home pay calculator 2026: employee CPF by age, employer CPF, income tax for residents and non-residents, monthly and yearly net salary.

South Africa Salary Calculator 2026/27 — PAYE

South African take-home pay for the 2027 tax year: PAYE with SARS brackets and rebates, UIF and retirement fund deductions — monthly and yearly.

South Africa VAT Calculator

South African VAT calculator: add 15% VAT or remove VAT from a VAT-inclusive price (multiply by 15/115). Net, VAT and total instantly.

TDS Rate Chart FY 2026-27 — Section 393 Rates, Thresholds and Due Dates

TDS rates and limits for FY 2026-27 under section 393 of the Income-tax Act 2025, with old 194C, 194J, 194I numbers, no-PAN rate and due dates.

UAE Gratuity Calculation — End-of-Service Benefits Explained

How end-of-service gratuity is calculated in the UAE: 21 and 30 days of basic salary, the two-year cap, resignation rules and worked examples.

UAE Salary & Gratuity Calculator

UAE salary calculator: net monthly pay after GPSSA pension for UAE nationals, total package and end-of-service gratuity under the UAE Labour Law.

UAE VAT Calculator

UAE VAT calculator: add 5% VAT to a price or extract VAT from a VAT-inclusive amount in AED. Includes the formula, zero-rated supplies and registration rules.

UK Salary Calculator — Take-home Pay 2026/27

Work out UK take-home pay for 2026/27: income tax, National Insurance, pension and student loan from your gross salary — monthly and yearly breakdown.

UK Take-home Pay 2026/27 — Income Tax and National Insurance Explained

How UK take-home pay is worked out in 2026/27: personal allowance, income tax bands, National Insurance, pensions, student loans and worked examples.

UK VAT Calculator

UK VAT calculator: add or remove VAT at 20% standard, 5% reduced or 0% zero rate. Net, VAT and gross amounts instantly, with the correct reverse formula.

US Paycheck Calculator 2026 — Salary After Tax

Estimate US take-home pay for 2026: federal income tax, Social Security, Medicare, state tax and 401(k) from your salary — per paycheck, month and year.

VAT Calculator

Free VAT calculator: add VAT to a net price or extract VAT from a gross price at any rate — 20% UK, 5% UAE, 15% Saudi Arabia, 19% Germany and more.

How to Price a Construction Tender Without Guessing

A practical guide to setting tender margin — overhead recovery, risk contingency and target profit.

Tender Margin Calculator — Bid Pricing for Contractors

Calculate safe tender margins accounting for real execution risk.

CPWD DSR 2021 — How to Use Rate Schedule for Estimation

A practical guide to reading CPWD DSR 2021: understanding item codes, rate components, lead charges, and how to apply DSR rates to BOQ preparation.

EMD & Security Deposit — The Hidden Cost of Capital in Tenders

Earnest money and performance security lock up contractor capital for months. How to price that cost into your tender margin instead of absorbing it silently.