Taxation · Tax Deduction or Collection at Source and Advance Tax

Deposit, Returns, Certificates and Consequences of Default in TDS and TCS

Updated 4 October 2026 · Fact-checked

After deducting TDS or collecting TCS, you must deposit it by the due date, file quarterly statements and issue certificates. Default costs you interest, late fee, penalty, expense disallowance and possible prosecution. Solve questions by finding the date, the rate and the number of months, then applying the right consequence.

Understand Deposit, Returns, Certificates and Consequences of Default

TDS and TCS do not end with deduction or collection. The deductor holds government money. The law therefore sets four duties: deposit the tax on time, report it in a quarterly statement, give the payee a certificate, and keep the records right. Every default has a matching price.

The deposit rule is mostly about the month of deduction. Tax deducted in a month is normally due by the 7th of the next month. For TDS deducted in March the date is 30 April. For TCS collected in March the date is 7 April. Government offices that pay without a challan deposit on the same day. A few payments, such as those by individuals or HUFs on property purchase or rent above the limit, follow a 30-day-from-month-end rule. Check your study material for the exact list.

The statement is a quarterly report of all deductions or collections. It matches the deposit with the PAN of each payee. The certificate is the payee's proof of tax paid, which the payee uses to claim credit. Salary uses an annual certificate (known in practice as Form 16). Non-salary TDS uses a quarterly certificate (Form 16A). TCS uses its own certificate. The deductor should check the form names in the latest Income-tax Rules.

The consequences come in layers. Interest is charged for late deduction and for late deposit. A fee is charged for a late statement. Penalty applies for failing to deduct, collect or pay, and for not filing statements or certificates. For specified payments, an expense on which tax was not deducted or deposited is partly or wholly disallowed in business income, depending on whether the payee is a resident or a non-resident. Wilful failure to deposit deducted tax can lead to prosecution.

A payee can ask the Assessing Officer for a lower or nil deduction certificate if the payee's estimated tax is lower than the TDS. This is different from a self-declaration by a resident individual to avoid TDS on certain interest-type income. The first needs the officer's approval. The second is a declaration made to the payer.

Key rules to remember

Deposit date: TDS in general: Deducted in April to February: by 7th of next month. Deducted in March: by 30 April; Government deductors paying without challan deposit on the same day. Some property and rent payments by individuals or HUFs follow a 30-day-from-month-end rule.
Deposit date: TCS: Collected in a month (including March): by 7th of next month; TCS collected in March is due by 7 April. The 30 April date is only for TDS deducted in March.
Quarterly TDS statement due dates: Q1 (Apr-Jun): 31 July | Q2 (Jul-Sep): 31 Oct | Q3 (Oct-Dec): 31 Jan | Q4 (Jan-Mar): 31 May; TCS statements fall earlier, on 15 July, 15 Oct, 15 Jan and 15 May.
Certificate time limits: Salary: by 15 June after the tax year | Non-salary TDS: 15 days from the due date of the quarterly statement | TCS: 15 days from the due date of the quarterly statement; A delay can attract a per-day penalty. Check the current rate in your material.
Interest on late deduction or collection: 1% per month or part of month, from the date tax was deductible to the date it is actually deducted; Any part of a month counts as a full month.
Interest on late deposit: 1.5% per month or part of month, from the date of deduction to the date of deposit; It runs from the date of deduction, not from the due date of deposit.
Fee for late statement: ₹200 per day for each day of default, capped at the amount of TDS or TCS for that statement; It applies to both TDS and TCS statements. The fee must be paid before the statement is filed.
Disallowance for non-deduction or non-deposit: Specified payment to a resident, tax deductible but not deducted or not deposited: 30% of the expenditure is disallowed. Specified payment to a non-resident, tax not deducted or not deposited: the entire amount is disallowed; This applies only to the specified payments on which tax is deductible, not to all expenses. If the tax is deducted during the tax year and deposited on or before the due date of the return, there is no disallowance. If it is deducted later or deposited after that date, the disallowed amount is allowed in the year of deposit. Use the section number given in your ICAI Income-tax Act, 2025 material.
Penalty for failure to deduct, collect or pay: Penalty equals the amount of tax not deducted, collected or paid; It can be avoided if the deductor proves a reasonable cause for the default.

How to solve Deposit, Returns, Certificates and Consequences of Default questions

Use this order for any question on deposit, returns, certificates or default. It keeps dates, months and consequences separate.

1Identify whether it is TDS or TCS, and whether the payment is salary, non-salary, or to a non-resident. This fixes the certificate and the disallowance rule.
2Note the date of deduction or collection. Work out the due date of deposit: 7th of next month, 30 April for TDS deducted in March (7 April for TCS collected in March), or the special rule if it applies.
3Compare the actual date of deposit with the due date. If late, compute interest at 1.5% per month or part of month from the date of deduction.
4Check whether tax was deducted late or not at all. If so, add interest at 1% per month or part of month from the date it was deductible.
5Count months with the part-of-month rule. Even one extra day makes a new month.
6Fix the statement and certificate dates for the quarter. Compute fee at ₹200 per day if the statement is late, capped at the tax amount.
7Check if the payment is a specified payment on which tax was deductible. If tax was not deducted or deposited, apply 30% disallowance for a resident payee and 100% for a non-resident payee, unless the deduction in the year and deposit by the due date of the return relief applies. Mention penalty and prosecution if the question hints at default.
8Write the answer as: provision, facts, calculation, conclusion.

Quickest way: Date, rate, months, consequence

When to use it: Use this for MCQs and for short written answers where time is tight.

MCQ: look at the month of deduction first. If TDS was deducted in March, the date is 30 April. If TCS was collected in March, it is 7 April. Otherwise, it is the 7th of the next month.
MCQ: if the question asks for interest, check which interest it is. Late deduction is 1%. Late deposit is 1.5%. Eliminate options that swap them.
MCQ: for disallowance, look for a specified payment to a 'resident' (30%) or to a 'non-resident' (100%).
Written: start with one line of law, then the table of dates, then the working. Show each month count separately so you earn step marks.
Written: end with a one-line conclusion such as 'Total interest payable is ₹X; disallowance is ₹Y', so the examiner finds the answer fast.

Common mistakes in Deposit, Returns, Certificates and Consequences of Default

Charging interest on late deposit from the due date of deposit.
Students remember the due date and assume interest starts after it.
Fix: Interest for late deposit runs from the date of deduction to the date of deposit, at 1.5% per month or part of month.
Counting complete months only.
It feels natural to count whole months, as in a bank loan.
Fix: Count every part of a month as a full month. For example, 2 months and 8 days is 3 months.
Using 7 April as the deposit date for March TDS deductions.
Students apply the 7th-of-next-month rule without the March exception for TDS.
Fix: TDS deducted in March is due by 30 April. TCS collected in March is due by 7 April. Do not mix the two dates.
Disallowing the full expense when tax was not deducted on a payment to a resident payee.
Students mix the resident rule with the non-resident rule.
Fix: For specified payments to residents, where tax was deductible but not deducted or not deposited, the disallowance is 30%. For specified payments to non-residents it is 100%. It does not apply to expenses on which no tax was deductible.
Confusing the certificate forms for salary and non-salary.
Both are called certificates of TDS, and the form numbers look alike.
Fix: Salary has one annual certificate (Form 16 in practice). Non-salary has a quarterly certificate (Form 16A).
Treating a lower deduction certificate like Form 15G or 15H.
Both reduce or avoid TDS.
Fix: A lower or nil deduction certificate is issued by the Assessing Officer on application. A self-declaration is given by the payee directly to the payer and only eligible payees can use it.

Worked examples

Example 1

A company was required to deduct TDS of ₹40,000 on 12 June 2026. It actually deducted it on 20 August 2026 and deposited it on 5 October 2026. Compute the interest payable for late deduction and late deposit.

Show the solution

Late deduction: the period is from 12 June to 20 August. This is 2 months and 8 days, which counts as 3 months.
Interest on late deduction = 1% × 3 × ₹40,000 = ₹1,200.
Late deposit: the due date was 7 September 2026, and the deposit was made on 5 October. The interest period runs from the date of deduction, 20 August, to 5 October.
20 August to 20 September is 1 month. 20 September to 5 October is a part month, so the total is 2 months.
Interest on late deposit = 1.5% × 2 × ₹40,000 = ₹1,200.
Total interest = ₹1,200 + ₹1,200 = ₹2,400.

Answer: Interest for late deduction is ₹1,200 and interest for late deposit is ₹1,200, so total interest is ₹2,400.

Example 2

A firm paid professional fees of ₹6,00,000 to a resident professional on 10 October 2026. TDS at 10% is ₹60,000. (a) The firm never deducted TDS. What is the disallowance? (b) Alternatively, the firm deducted the tax on 10 March 2027 and deposited it on 25 May 2027. Compute the interest for late deduction and late deposit, and state whether the expense is disallowed. Assume the return is due after 25 May 2027.

Show the solution

(a) The payee is a resident and professional fees are a specified payment on which tax is deductible, so the disallowance is 30% of the expenditure.
30% × ₹6,00,000 = ₹1,80,000 is added back to business income.
The firm can also face interest for non-deduction, and penalty equal to the tax if no reasonable cause is shown.
(b) Late deduction: the tax was deductible on 10 October 2026 but was deducted on 10 March 2027. This is exactly 5 months.
Interest on late deduction = 1% × 5 × ₹60,000 = ₹3,000.
Late deposit: the tax was deducted in March, so the due date of deposit is 30 April 2027. The deposit on 25 May 2027 is late.
Interest runs from the deduction date, 10 March, to 25 May. 10 March to 10 May is 2 months. 10 May to 25 May is a part month, so the total is 3 months.
Interest on late deposit = 1.5% × 3 × ₹60,000 = ₹2,700.
Total interest = ₹3,000 + ₹2,700 = ₹5,700.
Disallowance: the tax was deducted within the tax year of payment (in March 2027, its last month). It was deposited after the year end but before the due date of the return. Under the relief for deduction in the year and deposit by the due date of the return, no disallowance arises and the expense is allowed in the year of payment.
Without a reasonable cause, penalty can still arise for the defaults.

Answer: (a) Disallowance is ₹1,80,000. (b) Interest for late deduction is ₹3,000 and for late deposit is ₹2,700, so total interest is ₹5,700. The ₹6,00,000 expense is fully allowed in the year of payment under the relief.

Exam tips

Memorise two interest rates in a pair: 1% for late deduction and 1.5% for late deposit. Most MCQs test one of them.
In month-counting questions, write the dates from and to on separate lines. Examiners give marks for the period even if the final number is wrong.
If a question mentions a non-resident payee, check disallowance and penalty before anything else. It is almost always the point of the question.
For certificate questions, state the form, who issues it, and the time limit in three short bullets.
Write the penalty and prosecution only if the facts show default or wilful failure. Do not list every consequence for every question.

Practice questions from Tax Deduction or Collection at Source and Advance Tax

Deposit, Returns, Certificates and Consequences of Default in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Deposit, Returns, Certificates and Consequences of Default: frequently asked questions

What is the due date for depositing TDS?

Tax deducted in a month is generally due by the 7th of the next month. For tax deducted in March, the due date is 30 April. Government offices that pay without a challan deposit on the same day, and some property and rent payments follow a 30-day-from-month-end rule.

What is the interest on late deduction and late payment of TDS?

Late deduction attracts interest of 1% per month or part of month, from the date the tax was deductible to the date it was deducted. Late deposit attracts 1.5% per month or part of month, from the date of deduction to the date of deposit.

What is the consequence of not deducting TDS on an expense?

For a specified payment to a resident on which tax was deductible but not deducted or not deposited, 30% of the expenditure is disallowed in computing business income. For a specified payment to a non-resident, the entire amount is disallowed. The rule does not cover expenses on which no tax was deductible. The deductor may also be treated as an assessee in default and face interest and penalty.

How do I get a lower deduction certificate?

The payee applies to the Assessing Officer in the prescribed manner, showing estimated income and tax liability. If satisfied, the officer issues a certificate for lower or nil deduction for a stated period. The deductor must then deduct as per the certificate.

What is the difference between Form 16 and Form 16A?

Form 16 is the annual certificate for TDS on salary. Form 16A is the certificate for TDS on payments other than salary, issued quarterly. Check the latest rules for the exact form names and time limits.