Deposit TDS by the 7th: The Monthly Deadline Deductors Forget Until the Interest Bites

For deductors, the 7th of every month is the quietest deadline on the compliance calendar and the most expensive one to miss. Tax deducted at source must reach the credit of the Central Government by the 7th of the month following deduction, yet it rarely makes the diary alongside GST or advance tax. Tomorrow, Monday 15 June 2026, sharpens the point: it is the first advance-tax instalment date for FY 2026-27 and the statutory cut-off for issuing Form 16 for FY 2025-26, so the same finance teams that just missed a TDS challan now face two more clocks at once. This watchlist maps every deadline, the interest that bites when you slip, and the market backdrop into which tomorrow's tax outflows land.

Statutory Deadlines

The headline rule is simple and unforgiving. Under the Income Tax Department's tax-payment guidance, TDS deducted in any month must be deposited by the 7th of the following month for non-government deductors. May 2026 deductions were therefore due by 7 June 2026, and June 2026 deductions fall due on 7 July 2026. There are only three carve-outs worth memorising, and they are summarised below.

A late deposit is not a paperwork slip; it is an interest meter that runs from the day of deduction. Under Section 201(1A) of the Income Tax Act, tax deducted but not deposited attracts interest at 1.5 per cent per month or part of a month, computed from the date of deduction to the date the challan is actually paid. Because the rate applies to any part of a month, a deductor who holds back Rs 5,00,000 of May TDS and clears it on 9 June 2026, two days past the 7 June 2026 deadline, pays interest for two whole months at 1.5 per cent, that is Rs 15,000, not a pro-rated couple of days. The expense can also be disallowed under Section 40(a)(ia) until the tax is paid, so the cash cost and the tax cost compound.

Tomorrow's bigger event is advance tax. The first instalment for FY 2026-27 (assessment year 2027-28) is due on 15 June 2026, and Section 211 fixes it at 15 per cent of the estimated annual tax liability. Salaried taxpayers with only employer-deducted TDS can usually ignore it, but anyone with rental income, capital gains, freelance receipts, or business profits should run the numbers through our advance tax calculator before the day closes. A taxpayer estimating Rs 4,00,000 of tax for the year owes Rs 60,000 by tomorrow.

The cost of underpaying is codified, not discretionary. Section 234C levies interest of 1 per cent per month for three months on any shortfall against the 15 per cent June milestone, unless the paid amount covers at least 12 per cent of the assessed tax. Miss the Rs 60,000 entirely in our example and the 234C interest alone is Rs 1,800 by September, before 234B even begins. Understanding the difference between this and self-assessment tax settled at filing is the first step to not overpaying interest in 2027.

The 15th is also a certificate deadline. Form 16, the salary TDS certificate for FY 2025-26, must be issued to employees by 15 June 2026 under Rule 31, and Form 16A for the March 2026 quarter carries the same date. Employers who filed their Form 24Q quarterly statement by 31 May 2026 must now generate and deliver these from the TRACES portal, because employees cannot reconcile their Form 26AS without them. Every figure on a Form 16 should tie to what the TDS calculator reproduces from gross salary.

Market Events

Advance-tax dates are not only a taxpayer concern; they move money markets. The mid-quarter outflow on 15 June pulls thousands of crores from the banking system into the government account in a single window, tightening overnight liquidity and nudging short-term rates. Treasury desks track the June, September, December and March advance-tax dates precisely because the call money rate and the weighted average call rate tend to firm around them, and the Reserve Bank of India routinely conducts variable-rate repo operations to offset the drain. The Reserve Bank of India publishes these liquidity operations daily.

For equity investors, the compliance calendar rarely moves the index on its own, but it shapes the discipline of a portfolio. The recurring market-structure deadlines this quarter include SEBI's special window for dematerialisation of physical securities, covered in our report on the SEBI physical-securities demat window, and the broker-side algo-trading compliance timeline detailed in the SEBI algo-trading extension. Neither carries a 15 June trigger, but both belong on a serious investor's watchlist alongside tax dates. The Income Tax Department's own e-filing portal remains the single source of truth for every date cited here, and its tax-payment help section restates the 7th-of-the-month rule without exception.

Systematic investors should note the interplay between tax outflows and instalment investing. A monthly SIP debited around the 7th of the month sits in the same liquidity window as TDS deposits, and a step-up plan compounds the effect over a year. Model the trade-off between a Rs 60,000 advance-tax lump and a deferred investment using our SIP calculator and step-up SIP calculator, then decide whether to fund tomorrow's tax from cash or from a redemption.

Earnings

The editor's briefing for tomorrow carries no confirmed corporate-results calendar, so this watchlist names no company and no date that has not been verified. Q4 FY2025-26 earnings season concluded in late May 2026, and the Q1 FY2026-27 reporting cycle conventionally opens in the second week of July, which places 15 June 2026 in a quiet pocket between two seasons. We will not invent an earnings schedule to fill the gap.

What does sit on every listed company's desk tomorrow is its own deductor obligation. A company that paid June salaries, contractor invoices under Section 194C, or professional fees under Section 194J must deposit that TDS by 7 July 2026 and reflect it in the quarterly Form 26Q. For shareholders, a clean TDS and advance-tax record is a quiet signal of operating discipline that no quarterly headline captures, and the interest leakage from missed challans under Section 201(1A) is a real, if small, drag on reported other-income. A treasurer who automates the 7th-of-the-month deposit and the four advance-tax dates removes an entire category of avoidable interest from the profit-and-loss account.

FAQ

When is TDS due to be deposited each month?

For non-government deductors, TDS deducted in any month from April to February must be deposited by the 7th of the following month, per the Income Tax Department's tax-payment guidance. TDS deducted in March is due by 30 April. So May 2026 deductions were due 7 June 2026, and June 2026 deductions are due 7 July 2026.

What interest applies if I deposit TDS late?

Section 201(1A) charges interest of 1 per cent per month or part of a month from the date the tax was deductible to the date it was actually deducted, and 1.5 per cent per month or part of a month from the date of deduction to the date of deposit. The 1.5 per cent rate, calculated per part-month, means a one-day delay across a month boundary can cost two months of interest.

Are sections 194-IA and 194-IB on the same 7th deadline?

No. For TDS under Sections 194-IA (property purchase), 194-IB (rent by individuals), 194M (contractual or professional payments) and 194S (virtual digital assets), the due date is 30 days from the end of the month in which tax was deducted, paid through a challan-cum-statement rather than a regular monthly challan.

Who must pay the 15 June advance-tax instalment?

Any taxpayer whose estimated annual tax liability for FY 2026-27 is Rs 10,000 or more, after TDS, must pay advance tax, and 15 per cent of that estimate is due by 15 June 2026 under Section 211. Resident senior citizens aged 60 or above with no business income are exempt from advance tax altogether.

What happens if I miss the first advance-tax instalment?

Section 234C levies interest at 1 per cent per month for three months on the shortfall against the 15 per cent milestone, unless you have paid at least 12 per cent of the final assessed tax by 15 June. The interest is automatic and added at the time of filing your return for assessment year 2027-28.

Is the Form 16 deadline really 15 June?

Yes. Under Rule 31, employers must issue Form 16 for FY 2025-26 to employees by 15 June 2026, and Form 16A for the January-to-March 2026 quarter shares the same date. Employees should reconcile both against Form 26AS before filing.

Does the advance-tax outflow affect interest rates?

Indirectly. The mid-quarter advance-tax payment on 15 June moves a large sum from bank deposits into the government's account, tightening system liquidity and firming short-term money-market rates until the Reserve Bank of India injects funds through repo operations. It rarely moves equity indices on its own.