Indian income tax, GST and personal finance, with the working shown.
29 free calculators and in-depth guides on Indian income tax, TDS, GST, salary, loans and savings, written by a Chartered Accountant who runs a company's finance function. Every tax answer names the section of the Income-tax Act, 2025 or the GST law it rests on, links the official source and shows the arithmetic line by line. Work out your income tax for tax year 2026-27 under the old and new regimes, convert CTC to in-hand salary, add or remove GST and check the TDS rate under section 393.
Popular Old vs new tax regime EMI calculator Corporate tax calculator 8th Pay Commission Tax and GST due dates Tax & Money Lab
- 87pieces, numbers on the page
- 29calculators, nothing stored
- 0adverts, affiliates or sponsors
- 2022ICAI-qualified, in industry
Two decision-intelligence tools, built on evidence.
- 432funds · 864 scheme codes
- 1.9 Mdated NAVs since 2015
- 0proxies, scores or rankings
- 4structures, side by side
- 3 & 5 yrnet benefit and break-even
- 2025Income-tax Act, tax year 2026-27
- Next advance tax instalment 15 Dec 15 Dec 2026 · 75% of the year’s tax Plan it →
- Next GST return 11 Nov GSTR-1 for Oct All due dates →
- Calculators 29 live Tax 8 · Investing 7 · Loans 6 · Salary 4 · Financial Planning 3 · GST 1 Open all →
- Writing 87 pieces 41 in the last 30 days · latest 31 Oct 2026 All writing →
- TDS and TCS statements for Q2 (Forms 138, 140, 143, 144)Every deductor and collector (earlier 24Q, 26Q, 27Q and 27EQ) Tax 31 Oct 2026
- TDS / TCS deposit for OctEvery deductor Tax 07 Nov 2026
- GSTR-1 for OctMonthly filers GST 11 Nov 2026
- EPF and ESI contributions for OctEmployers Payroll 15 Nov 2026
- GSTR-3B and tax for OctMonthly filers GST 20 Nov 2026
- ITR for audit cases, tax year 2025-26 — extended from 31 OctCompanies, audit cases and partners of audited firms Tax 21 Nov 2026
- Last day to take input tax credit on 2025-26 invoices and debit notes; 2025-26 credit notes and rule 37A reversals dueEvery regular GST taxpayer GST 30 Nov 2026
- TDS / TCS deposit for NovEvery deductor Tax 07 Dec 2026
- GSTR-1 for NovMonthly filers GST 11 Dec 2026
- EPF and ESI contributions for NovEmployers Payroll 15 Dec 2026
- Advance tax: 75% of the year’s taxTax ≥ ₹10,000 after TDS Tax 15 Dec 2026
- GSTR-3B and tax for NovMonthly filers GST 20 Dec 2026
- AOC-4: audited financial statements for 2025-26 filed with the RoC — no additional fee until 31 DecEvery company (normally 30 days from the AGM) Company 31 Dec 2026
- GSTR-9 / 9C annual return for 2025-26Turnover above ₹2 crore / ₹5 crore GST 31 Dec 2026
- Belated or revised ITR for 2025-26Anyone who missed 31 July Tax 31 Dec 2026
- TDS / TCS deposit for DecEvery deductor Tax 07 Jan 2027
- GSTR-1 for DecMonthly filers GST 11 Jan 2027
- GSTR-1 (QRMP) for the quarterQuarterly filers GST 13 Jan 2027
- EPF and ESI contributions for DecEmployers Payroll 15 Jan 2027
- GSTR-3B and tax for DecMonthly filers GST 20 Jan 2027
- TDS and TCS statements for Q3 (Forms 138, 140, 143, 144)Every deductor and collector (earlier 24Q, 26Q, 27Q and 27EQ) Tax 31 Jan 2027
- MGT-7 / MGT-7A annual return for 2025-26 — no additional fee until 31 JanEvery company (normally 60 days from the AGM) Company 31 Jan 2027
- TDS / TCS deposit for JanEvery deductor Tax 07 Feb 2027
- GSTR-1 for JanMonthly filers GST 11 Feb 2027
- EPF and ESI contributions for JanEmployers Payroll 15 Feb 2027
- GSTR-3B and tax for JanMonthly filers GST 20 Feb 2027
- TDS / TCS deposit for FebEvery deductor Tax 07 Mar 2027
- GSTR-1 for FebMonthly filers GST 11 Mar 2027
- EPF and ESI contributions for FebEmployers Payroll 15 Mar 2027
- Advance tax: 100% of the year’s taxTax ≥ ₹10,000 after TDS Tax 15 Mar 2027
- GSTR-3B and tax for FebMonthly filers GST 20 Mar 2027
- GSTR-1 for MarMonthly filers GST 11 Apr 2027
- GSTR-1 (QRMP) for the quarterQuarterly filers GST 13 Apr 2027
- EPF and ESI contributions for MarEmployers Payroll 15 Apr 2027
- GSTR-3B and tax for MarMonthly filers GST 20 Apr 2027
- TDS / TCS deposit for MarchEvery deductor Tax 30 Apr 2027
- TDS / TCS deposit for AprEvery deductor Tax 07 May 2027
- GSTR-1 for AprMonthly filers GST 11 May 2027
- EPF and ESI contributions for AprEmployers Payroll 15 May 2027
- GSTR-3B and tax for AprMonthly filers GST 20 May 2027
- TDS and TCS statements for Q4 (Forms 138, 140, 143, 144)Every deductor and collector (earlier 24Q, 26Q, 27Q and 27EQ) Tax 31 May 2027
- Form 130 (earlier Form 16) to employees for 2026-27Employers Payroll 15 Jun 2027
- Advance tax for tax year 2027-28: 15% of the year’s taxTax ≥ ₹10,000 after TDS Tax 15 Jun 2027
- ITR for tax year 2026-27Individuals with no business or professional income Tax 31 Jul 2027
- TDS and TCS statements for Q1 (Forms 138, 140, 143, 144)Every deductor and collector (earlier 24Q, 26Q, 27Q and 27EQ) Tax 31 Jul 2027
- ITR for tax year 2026-27, business or profession without auditFreelancers, professionals and businesses whose accounts are not audited, and partners of such firms Tax 31 Aug 2027
- Advance tax for tax year 2027-28: 45% of the year’s taxTax ≥ ₹10,000 after TDS Tax 15 Sept 2027
- Statutory audit and AGM: accounts for 2026-27 adoptedEvery company except a one-person company (Companies Act, section 96) Company 30 Sept 2027
- Tax audit report (Form 26) for tax year 2026-27Turnover or receipts above the section 63 limits Tax 30 Sept 2027
Monthly TDS, GST and payroll dates, the advance-tax instalments, tax audit, AGM and RoC filings, and the year-end returns. Weekends and notified extensions are not applied.
Nil to ₹12 lakh after the section 87A rebate; standard deduction ₹75,000 for salary. Compare with the old regime →
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- 0figures stored — every calculator runs on your device
- 0adverts, affiliates or sponsors
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- 1accountant, checking each rule against its section
Calculate first. Understand second.
Each tool shows its working, runs in your browser, and can be shared as a link or a PDF. No sign-up, nothing stored.
Four steps. One accountant. No hot takes.
Every piece on this site goes through the same four steps, and the calculators are built to the same rule: the working is on the page so it can be checked.
Start from the statute, not the summary.
A rule is quoted from the section it lives in, with the section named — old number and new, where the 2025 Act renumbered it.
02WorkWorked through, not asserted.
If a piece says a figure, the arithmetic is on the page. The calculators show the formula they use rather than hiding it.
03CheckFour rules, and I'd like to be held to them.
No affiliate links or sponsored posts. Sources named. Numbers checked against the current Finance Act before anything is published.
04CorrectFixed where it stands, and noted.
Corrections go into the piece itself and are recorded at its foot, so a later reader sees the right figure and an earlier one sees what changed.
The newest piece.
Old Regime or New: How to Actually Decide
The comparison everyone runs is the wrong one. Instead of asking which regime is better, work out your break-even deduction — the single number that settles it in about two minutes.
Read the piece →The last six pieces.
What people ask before they read on — or run a number.
Something else? Write to hello@caakhilesh.in and the accountant who wrote the piece will reply.
Who writes this, and is any of it advice?
CA Akhilesh Kumar, a Chartered Accountant qualified with the ICAI in 2022 and a Senior Finance Manager in industry in Gurgaon; every article, calculator and tool here is his own work. None of it is tax, financial, investment or legal advice, and it takes no account of your circumstances. For your own position, engage a professional who can.
What is on the site besides the writing?
29 calculators for Indian income tax, TDS, GST, salary, loans and investing; the Tax & Money Lab with the Tax Decision Engine, Business Tax Decision Intelligence (LLP vs Pvt Ltd vs HUF), and Investing Intelligence — research on 430-plus mutual funds, side-by-side comparison, and goal and retirement planners; Career Intelligence with sourced salary evidence, a market radar and a job-fraud checker; and a curated news page explained in plain words.
Where does the mutual fund data come from, and does the site recommend funds?
Scheme identity, category, daily NAV and NAV history come from AMFI and carry provenance — source, observation date and collection date on every figure. Expense ratio, AUM, portfolio, manager, riskometer and benchmark series are shown as Insufficient data until the official record is on file; nothing is estimated and no proxy index is substituted. The site does not recommend buying, selling or holding any scheme and never ranks funds: "best" is answered as a research question with the dimensions shown.
Do the calculators and tools store what I type?
No. Every calculator, the decision engines, the fund comparison and the planners run in your browser; the site's security policy allows the page no connection to any other server. A share link carries the figures after the # in the address, which browsers never send; a PDF is built on your device. No PAN, Aadhaar, bank or broker details are asked for anywhere.
How current is the tax content?
Articles name the provision they rest on. The calculators and the Tax Decision Engine follow the Income-tax Act, 2025 where it applies from 1 April 2026 (tax year 2026-27), and the business-structure tool states the assessment or tax year on every rate. The law moves with every Finance Act, so check the date on a piece before relying on it.
Are the returns in the planners forecasts?
No. The goal and retirement planners show 8%, 10% and 12% as illustrative scenarios you can change; inflation is an assumption shown in the input and never applied silently, and every target is also shown in today's purchasing power.
Can I quote a figure or link to a page?
Yes. Every calculator has a ready-made credit line, and articles and tools can be linked freely; a link back is all that is asked. Republishing data tables wholesale is not permitted.
Are there affiliate links, sponsored pieces or adverts?
None. No affiliate links, sponsored posts, referral codes, adverts or paid rankings — on the writing, the calculators or the fund research.
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