The TDS deposit due date for September 2026 is 7 October 2026 — a Wednesday, nine days away. Every rupee you deducted as TDS in September, from supplier payments, rent, salaries, commissions or professional fees, has to reach the government by that date. It is money you are holding, not money you have earned; the person you deducted it from is waiting to see it as a credit against their own tax. Miss the date and two things go wrong at once — you owe interest, and your deductee’s credit stalls. It is the most routine line on the compliance calendar, which is exactly why it is the one most often left to the last working day before the 7th — the point at which a wrong challan or a missed deductee is hardest to put right.
What the TDS deposit due date for September 2026 actually covers
The rule is a timing rule, and it has not changed: tax deducted in a month must be deposited to the credit of the Central Government by the 7th of the following month. September’s deductions are therefore due on 7 October. The income-tax portal states the general rule plainly — deposit “within the 7th of the month following the month of deduction” — with a few carve-outs: tax deducted in March gets until 30 April, and TDS on property, rent paid by individuals, certain payments to residents and virtual digital assets runs on a 30-day-from-month-end clock instead. For the ordinary monthly deductions most businesses make, the date is the 7th, full stop.
One nuance for this year: September falls in the first full year under the new Income-tax Act, so the tax you deducted this month is governed by the recodified law rather than the old one. The deposit timing is unchanged — but if you are relying on a specific section number or interest figure you read last year, confirm it against the current law before you quote it. What is not in doubt is the date.
Why 7 October matters more this month — the quarter closes
September is the last month of the July–September quarter, and that raises the stakes of an on-time deposit. Your monthly deposits feed the quarterly TDS statement, which for this quarter is due 31 October 2026. That statement is what actually reports, deductee by deductee, who you deducted from and how much — and it is the filing that pushes each credit into your deductees’ Form 26AS and Annual Information Statement. A deposit on its own is not enough for them to claim it; the deposit has to be made and the quarterly statement filed, in the right amount against the right PAN.
So a clean 7 October deposit is the first half of a two-part job that finishes on 31 October. If September’s deposit is short, late, or tagged to the wrong nature of payment, the error surfaces first in the quarterly statement and then in your deductees’ 26AS — usually as a call from their accounts team to yours, weeks later, asking why a credit they were promised is not there.
What being late costs — the part clients underestimate
There are two separate clocks here, and they are not the same. If you deducted the tax but deposited it late, interest runs for every month or part of a month from the date of deduction to the date you actually pay. If you deducted late — or failed to deduct when you should have — there is a further, separate interest charge running from the date the tax was deductible to the date it was deducted. Both accrue automatically; neither waits for a notice. We have kept the exact rates out of this note on purpose: they sit in the part of the law now being renumbered, and a firm quoting a stale figure is worse than one telling you to confirm the current one.
The quieter cost is the one that does not show on your books at all — your deductee’s blocked credit. Until you deposit and report, the tax you took out of their payment is invisible to them. For a vendor or a landlord, that is working capital they cannot set off; for an employee, it is a mismatch that turns a simple return into a query. On-time TDS is, in that sense, a courtesy you owe the people you pay — and a reconciliation you owe yourself.
What to do before 7 October
- Pull September’s deduction register now and tie every entry to the payment it came from — deposit against the correct nature of payment, not a rounded lump sum.
- Deposit by 7 October (Wednesday). For tax deducted on property, rent paid by individuals, certain resident payments and virtual digital assets, use the 30-day-from-month-end date instead.
- Do not stop at the deposit — diarise the quarterly statement for 31 October; the deposit posts the money, the statement posts the credit.
- Match each deductee’s PAN before you file the quarter; a wrong or missing PAN is the most common reason a credit never reaches a 26AS.
- If March’s or an earlier month’s deposit is still open, clear it too — interest is running on it every day it stays unpaid.
TDS is the one compliance where being late does not just cost you — it costs the person you deducted from. The TDS deposit due date for September 2026 is 7 October, and the quarter it closes is due three weeks after that. Deposit on the 7th, file the statement by the 31st, and Q2 reconciles for everyone. Leave either one, and it reconciles for no one.