Three dates decide income tax return filing in Mumbai this year. The due date for salaried and other non audit filers was 31 July 2026. Audit cases have until 31 October 2026. Anyone who missed July can still file a belated return until 31 December 2026, carrying a late fee of ₹5,000, or ₹1,000 where total income stays under ₹5 lakh. Miss even that window and some losses stop carrying forward, which usually costs far more than the fee itself. A wholesaler in Zaveri Bazaar sitting on unfiled books in September is therefore not out of options. The work simply has to start now. LegalX India prepares CA reviewed returns from ₹999 in 3 to 5 days, fully online.
What will filing your return cost you in Mumbai?
The government charges nothing to file. What you pay for is judgement, and ours starts at ₹999 for a CA prepared salaried return. That price covers the regime comparison, a line by line check of AIS and Form 26AS against your documents, preparation, filing and e-verification support. Returns with business income, capital gains across several brokers, or foreign assets take more working time, so we quote those after a short scoping call rather than surprising you later. Firms, LLPs and companies are always quoted on scope. If you want the national picture of the service before you commit, read our complete Income Tax Return Filing guide for India. This page sticks to what changes because you file from Mumbai.
Do the filing thresholds catch your business at all?
Most Mumbai filers do not really get a choice. If tax was deducted on your salary, filing is how you settle the year and claim any refund waiting for you. Every partnership firm, LLP and company files regardless of profit or loss, and a loss year is precisely when filing matters, because the return preserves the carry forward. The national guide lists the deposit and spending triggers that pull in people below the exemption limit, so we will not repeat them here.
One Mumbai specific point deserves emphasis. A trader holding a Maharashtra GSTIN, which always begins with the state code 27, has already told the department their turnover through GST returns. When a Zaveri Bazaar wholesaler files GSTR-3B all year and then skips the income tax return, the mismatch is visible without anyone lifting a file. The ITR is not optional paperwork in that position. It is the closing entry.
How does the Maharashtra profession tax layer touch your ITR?
Look at any Mumbai payslip and you will find a profession tax line. Maharashtra runs two separate certificates on mahagst.gov.in, and confusing them causes real reconciliation errors at return time.
- PTRC is the employer's certificate, and under it ₹200 comes off each salary every month, with ₹300 in February, totalling ₹2,500 for the year.
- Women earning up to ₹25,000 a month should see no profession tax deduction at all, a Maharashtra exemption in force since 2023.
- PTEC is the entity's own certificate, a flat ₹2,500 a year that a proprietor, professional, director or LLP partner pays personally, with no return attached.
- The two figures match at ₹2,500 by accident of the constitutional ceiling, which is exactly why so many filers mix them up.
Before we file, we check that the profession tax figure in your Form 16 matches your payslips, and that a self employed client's own PTEC payment is reflected in the books. Small numbers, but they are the difference between a clean computation and an avoidable query.
Which documents carry the most weight for a Mumbai return?
The sequence we ask for is deliberate.
- Form 16 and your final March payslip, so the profession tax and TDS lines can be tied together.
- AIS and Form 26AS, pulled fresh from the portal, because stale downloads hide late TDS credits.
- Capital gains statements from every broker and fund house you used, not just the main one.
- Rent proof if you claim HRA, and this is where the city gets specific.
Leave and licence agreements are compulsorily registrable in Maharashtra under section 55 of the Maharashtra Rent Control Act, 1999, with the obligation sitting on the landlord. A registered agreement plus rent receipts is the strongest HRA evidence a Mumbai tenant can hold, and an unregistered one is the loose thread scrutiny pulls first. Traders and consultants add their books, bank statements and GST filings so business income lands on the return the way it already appears to the department.
Which dates run the ITR year?
Pin these to the office wall. The table shows the year as it stands for returns being filed in 2026.
| Situation | Last date | What it means if crossed |
|---|---|---|
| Non audit filers, including salaried | 31 July 2026 | Late fee applies, interest builds on unpaid tax |
| Audit cases, firms and companies under audit | 31 October 2026 | Same consequences, larger stakes |
| Belated return | 31 December 2026 | ₹5,000 fee, ₹1,000 for income up to ₹5 lakh |
| Revised return | 31 December 2026 | No correction possible after this date |
Refunds usually reach the bank account 20 to 45 days after e-verification, so a September filing can still see money back before the year closes.
Where do Mumbai filers go wrong?
The mistakes we correct most often in this city have a pattern.
- Broker mismatches: investors here often run 2 or 3 demat accounts, and the forgotten one is always the one AIS remembers.
- Profession tax ignored: the Form 16 figure and the payslips disagree, and nobody checks before filing.
- HRA claimed on an unregistered leave and licence agreement, with no receipts behind it.
- Bullion and card settlements in the jewellery trade landing in AIS while the declared turnover tells a smaller story.
- Regime picked by habit rather than arithmetic, when only a computation under both can say which is cheaper.
A gems and jewellery exporter in SEEPZ, Andheri East faces the same discipline in reverse. Export proceeds arrive through banking channels the department can see, so the declared income has to reconcile with what the remittances already show. We run these checks before filing, not after a notice arrives.
Why LegalX India for ITR filing in Mumbai?
Because the checking is the product. Over 15,000 clients have filed through LegalX India, backed by a team of 50+ experts with 10+ years of practice behind them. Our 4.8 Google rating across 2,500+ reviews reflects returns that went through cleanly the first time. Everything runs online, from document pickup over WhatsApp to e-verification, because the income tax portal requires no office visit from anyone. If you would rather sit across a table, our office at Haware Fantasia Business Park in Vashi, Navi Mumbai is open to you. Where you live or work across the metro changes nothing about the filing itself. Share your documents today and the return is typically ready for your approval within 3 to 5 days.