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CAFTM Calculator Library

Tax, GST, income tax, TDS, EMI and business calculators — designed for quick professional use, with print-ready reports for major calculators.

Tax rules in the Income Tax and TDS calculators are aligned to the latest government-published FY/AY material checked for this build.

Choose a Calculator

Click a calculator name to open it. Only the selected calculator is shown, keeping the page clean and fast.

Tax & Percentage Calculator

Percentage addition, tax-inclusive calculation, reverse percentage, discount, markup, quick percentage and GST split.

Percentage Add / Total

Add a percentage to an amount.

Amount

Percentage (%)

Tax / GST Included

Find taxable value and included tax from a tax-inclusive amount.

Tax-inclusive Amount

Included Tax Rate (%)

Reverse Percentage

Find the 100% base amount when a percentage amount is known.

Given Amount

Percentage (%)

Percentage Minus / Discount

Subtract a percentage from an amount.

Amount

Minus Percentage (%)

Taxable → Tax → Gross

Calculate tax and invoice total from taxable value.

Taxable Amount

Tax Rate (%)

Markup Calculator

Add markup to cost and calculate selling price.

Cost / Base Amount

Markup (%)

Quick Percentage Calculator

Use one input pair for common percentage operations.

Amount

Percentage (%)

GST Split

Split total GST into CGST + SGST. Select IGST when the transaction is interstate.

Taxable Amount

Total GST Rate (%)

Supply Type

GST Calculator

Calculate GST exclusive/inclusive values and split tax into CGST, SGST or IGST.

GST Amount

Amount

GST Rate (%)

Amount Type

Supply

GST Quick Rates

Common rates available for quick selection. The calculator also accepts any valid rate entered in the tax percentage calculator.

5% GST2.5% + 2.5%

12% GST6% + 6%

18% GST9% + 9%

28% GST14% + 14%

GST rates are transaction-specific. Use the applicable HSN/SAC rate rather than assuming a standard rate.

Income Tax Calculator

Individual/HUF normal-income calculator with Old vs New Regime comparison, rebate, surcharge and 4% health & education cess. Default tax regime is New.

Tax Year / Assessment Year

Age Category

Residential Status

Primary Income Type

Income

Gross Salary / Pension

Other Normal Income

House Property Income (before home-loan interest)

Business / Profession Income

Deductions / Relief Inputs

Professional Tax / Employment Tax

80C Investments

80D Health Insurance

80CCD(1B) NPS

80E / 80G / Other Eligible Deductions

80CCD(2) Employer NPS

Old Regime: Home Loan Interest (eligible loss)

Other Deduction / Exemption (Old Regime only)

This calculator is for normal slab-rate income. Special-rate capital gains, lottery/online-game winnings, DTAA income, AMT/MAT, agricultural-income rate integration, set-off/carry-forward and detailed HRA/exemption rules are not automatically computed.

TDS Calculator — FY 2026-27

Common resident TDS calculations using the post-1 April 2026 framework. Old Income-tax Act section references are shown alongside the new Section 393 table reference where applicable.

Nature of Payment

Payee / Payer Category

Payment / Credit Amount

Threshold Already Crossed?

Payee has not furnished PAN (20% rule may apply)

TDS rates and thresholds are retained under the new Act, but for transactions from 1 April 2026 the new Section 393 table references should be used in the TDS statement. The calculator does not determine every special/non-resident DTAA case.

EMI Calculator & Amortisation Report

Calculate monthly EMI, total interest, total payment and a full month-wise amortisation schedule. The report layout follows the blue-table style of your reference PDF.

Loan Amount (₹)

Annual Interest Rate (%)

Total Months

Processing Fee (₹)

Profit Margin Calculator

Calculate gross profit, profit margin and markup from cost and selling price.

Total Cost

Selling Price / Revenue

Break-even Calculator

Calculate break-even units, break-even sales and contribution margin.

Fixed Costs

Selling Price per Unit

Variable Cost per Unit

Expected / Actual Units (optional)

Depreciation Calculator

Calculate depreciation using Straight Line or Written Down Value (reducing balance) methods.

Asset Cost

Residual / Salvage Value

Depreciation Rate (%)

Useful Life (Years)

Method