Tax, GST & finance calculators
Practical calculators from practising Chartered Accountants — including partner remuneration under section 40(b), with a reverse mode.
Partner Remuneration Calculator (Section 40(b))
Maximum remuneration a firm or LLP can deduct for its working partners under section 40(b) of the Income-tax Act, 1961 and section 35(e) of the Income-tax Act, 2025, worked out from book profit — and the reverse: the profit needed to pay a given amount.
Open calculator → CalculatorIncome Tax Calculator — Old vs New Regime
Compare tax under the old and new regimes side by side for FY 2025-26 (AY 2026-27), with rebate, surcharge and cess.
Open calculator → CalculatorGST Calculator
Add GST to a price or take it out of a GST-inclusive amount, with the CGST, SGST or IGST split.
Open calculator → CalculatorLoan EMI Calculator
Monthly EMI, total interest and a year-by-year repayment schedule — or work backwards to the loan an EMI can support.
Open calculator →Calculators written by practising Chartered Accountants
Each calculator follows the rules we apply in practice and explains them underneath: the formula, the conditions, the common mistakes. They are estimates for planning — the result on your own accounts depends on facts only a review of your books and documents can settle.
The partner remuneration calculator is for partnership firms and LLPs deciding how much remuneration to pay working partners under section 40(b) of the Income-tax Act, 1961 and section 35(e) of the Income-tax Act, 2025. The income tax calculator compares the old and new regimes, the GST calculator adds or removes GST, and the EMI calculator plans a loan. Related services: direct tax, GST and project financing.
Common questions
Are the calculators free?
Yes. There is nothing to sign up for and nothing you enter is stored or sent anywhere — the calculation runs in your browser.
Can I rely on the results for filing?
Treat them as a close estimate for planning. Filing positions depend on your full facts, so have a Chartered Accountant confirm them first.
Which tax year do they cover?
The income tax calculator uses FY 2025-26 (AY 2026-27). The partner remuneration calculator covers section 40(b) of the Income-tax Act, 1961 and section 35(e) of the Income-tax Act, 2025, which carry the same ceilings.
Can you suggest another calculator?
Yes — tell any of our offices which one would help and we will consider adding it.
This calculator gives an estimate for general guidance and is not tax or legal advice. Rates, limits and the way they apply change with the law and the facts; confirm your figures with a Chartered Accountant before relying on them.