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Free Indian tax
calculators.

Accurate, FY 2026-27 ready, mapped to the new IT Act 2025 section numbers. Every calculator is server-rendered, indexable, and has a public REST API behind it.

Income Tax

2 tools

Income Tax Calculator

Old vs new regime side-by-side. All slabs, surcharge, cess, Section 157 rebate.

Income TaxRegime comparison

Advance Tax Calculator

Quarter-wise instalments, 15/45/75/100% schedule under Section 240.

Advance Tax

Salary & Retirement

3 tools

HRA Exemption Calculator

Three-formula minimum, metro vs non-metro, DA-inclusive. Section 26 (formerly 10(13A)).

SalaryHRA

Gratuity Calculator

Payment of Gratuity Act 1972. ₹20 lakh tax-free cap under Section 23 (formerly 10(10)).

SalaryRetirement

Leave Encashment

₹25 lakh cap (raised May 2023). Four-formula lowest-of test.

SalaryRetirement

Capital Gains

2 tools

Capital Gains Calculator

STCG and LTCG on equity, real estate, gold, mutual funds. Section 112A and 111A.

Capital GainsLTCGSTCG

Indexation Calculator

CII-based indexed cost of acquisition. 20% with indexation vs 12.5% without.

Capital GainsCII

80C / Investments

6 tools

PPF Calculator

7.1% p.a. compounded. EEE - tax-free deposits, interest, maturity. 15-year tenure.

80CSavings

NSC Calculator

7.7% p.a., 5-year lock-in. Section 123 (80C) on deposit and accrued interest.

80CSavings

Sukanya Samriddhi

8.2% p.a., 21-year maturity. EEE. Best long-term tax-free savings for a girl child.

80CSavings

NPS Retirement Corpus

Project retirement corpus, 60% lump-sum and 40% annuity. Section 323 deduction.

80CCDRetirement

ELSS SIP Calculator

3-year lock-in. Section 123 (80C) deduction. LTCG at 12.5% above ₹1.25L.

80CMutual Funds

Home Loan EMI

Monthly EMI + Section 71 (interest, ₹2L) + Section 123 (principal, ₹1.5L) tax breaks.

Section 24(b)Home loan

GST

1 tool

GST Calculator

IGST/CGST/SGST split. Forward and reverse calculation. Composition vs regular.

GST

TDS

1 tool

TDS Calculator

Section 393 (consolidated TDS). Salary, rent, professional fees, contractor payments.

TDS

Interest & Penalty

1 tool

Section 234A/B/C Interest

Interest for late ITR filing, advance tax shortfall, and instalment deferment.

PenaltyInterest