Recommended Free Tools
For a qualifying refund governed by section 244A of the Income-tax Act, 1961, interest is usually simple interest at 0.5% for every month or part of a month. The practical calculation is:
Estimated interest = eligible refund amount × 0.005 × counted months
As an Amazon Associate I earn from qualifying purchases.
The difficult part is not the multiplication. You must first identify the tax year and governing law, determine whether the refund came from advance tax, TDS/TCS, self-assessment tax or another payment, select the legally correct start date, count every partial month as a whole month where required, apply the ₹100 rounding rule and test the 10% eligibility threshold where it applies.
What interest is paid on an Indian income-tax refund?
Section 244A provides interest when a refund becomes due under the Income-tax Act, subject to the conditions in that section. For refunds covered by the 1961 Act, the usual rate is 0.5% per month or part of a month. This is simple interest, not compound interest: interest is not added to the principal so that a further month earns interest on earlier interest.
#1 Best Overall
The amount that earns interest is the legally eligible refund amount, not automatically every rupee shown in a taxpayer’s bank credit. A refund can contain components with different payment histories, and the applicable provision may treat those components differently. The processing intimation, refund record and relevant assessment or appellate order are therefore more reliable than a quick calculation based only on the date money arrived.
The statutory wording describes interest as payable “in addition to” the refund. In practical terms, the department determines the refund and interest together under the applicable law, subject to the start-date, threshold, rounding and period rules explained below.
First identify which law applies
The Income-tax Act, 2025 took effect on 1 April 2026 and repealed the 1961 Act, but the transition rules preserve the old provisions for tax years beginning before that date and for related proceedings.
Outdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchPC Slower Than It Used to Be?
A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11| Tax year or proceeding | Rule to use |
|---|---|
| FY 2025–26, corresponding to AY 2026–27 | Continue using the Income-tax Act, 1961 rules, even if the return is filed or processed after 1 April 2026. |
| A tax year beginning on or after 1 April 2026 | Use the corresponding refund-interest provision and rules under the Income-tax Act, 2025. Do not mechanically cite section 244A without checking the new Act. |
The detailed 2025 Act formula and section mapping are not established here. If the refund relates to a tax year beginning on or after 1 April 2026, verify the current text of that Act and its rules before relying on the 1961 Act calculation. The procedure below is principally for refunds governed by section 244A.
Records to collect before doing the calculation
A defensible calculation needs dates and amounts from the department’s records. Gather:
- The assessment year and financial year to which the refund relates.
- The return-filing date and the statutory due date for that return.
- The processing intimation under section 143(1), or the regular-assessment order if the refund arose later.
- The refund amount, including any separate interest amount shown in the intimation or refund record.
- Tax-payment details identifying advance tax, TDS or TCS credit, self-assessment tax and any payment made against a demand.
- The date on which the refund was granted. This is normally the relevant end date, not simply the date the return was submitted or processed.
- Any appellate, reassessment or rectification order that changed the refund.
When a refund is made up of several components, keep the component amounts and payment dates separate until the applicable rule has been checked. Assuming that one start date applies to the whole bank credit can overstate or understate interest.
Step-by-step method under section 244A
1. Classify the source of the refund
The source determines the starting point. The main branches are:
Rank #2
- Ideal for Gifting
- Ideal for a bookworm
- Compact for travelling
| Refund source | General starting rule |
|---|---|
| Advance tax, TDS/TCS credit or tax treated as paid under section 199 | If the return was furnished on or before its due date, interest generally starts on 1 April of the assessment year. If the return was late, interest generally starts on the date the return was furnished. |
| Self-assessment tax paid under section 140A | Interest generally starts on the later of the date the return was furnished and the date the self-assessment tax was paid. |
| Other refund cases | Interest generally starts on the date or dates the relevant tax or penalty was paid. For a payment against a demand, the relevant date is the date the payment exceeds the demand. |
“Generally” matters because section 244A contains separate branches and exceptions. A refund resulting from appellate or reassessment proceedings should be matched to the order and the specific statutory provision rather than forced into the ordinary advance-tax or TDS pattern.
2. Decide whether the return was timely
For the advance-tax and TDS/TCS branch, compare the actual furnishing date with the due date for that assessment year. A return filed by the due date uses 1 April of the assessment year as the general start date. A late return uses the filing date instead. This comparison is not a substitute for checking the exact due date applicable to the taxpayer and year.
The timeliness test does not automatically control self-assessment-tax refunds or every other refund category. Those branches use their own payment and filing rules.
3. Set the legally relevant start date
Write the selected start date beside each refund component. For example, a TDS component in a timely return may have a 1 April start, while a self-assessment-tax component may start from the later of payment and filing. If the records show more than one relevant payment date, do not combine them prematurely.
Quick wins for a faster PC:
Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →4. Set the end date
Use the date on which the refund was granted. The grant date is not automatically the return-filing date, the processing date or the date on which the taxpayer first saw a credit in the bank account. Where the department’s refund record and intimation identify the grant date, use those records. If an order revised the refund, determine which grant or order controls the component being calculated.
5. Apply the refund-eligibility threshold
For specified advance-tax, TDS/TCS and self-assessment-tax refunds covered by section 244A(1)(a) and (aa), interest is not payable when the refund is less than 10% of the tax determined under section 143(1) or on regular assessment, as applicable.
This is not a universal rule that cancels interest on every kind of refund. First identify the refund source and the subsection that applies. Then compare the refund with the relevant assessed-tax figure. A refund equal to or greater than 10% is not eliminated by the “less than 10%” condition, but all other statutory requirements still apply.
6. Round the relevant amount as required
Rule 119A applies rounding rules to interest calculations. The relevant sum is rounded down to the nearest ₹100. The Income Tax Department’s illustration shows ₹8,489 reduced to ₹8,400 for the computation. Do not round upward, and do not assume that ordinary mathematical rounding is permitted.
The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Use the amount and component treatment shown in the applicable intimation or order when deciding what constitutes the relevant sum. A mixed refund may require separate treatment before the rounding step.
7. Count months and part-months
For a monthly rate, Rule 119A treats a fraction of a month as a complete month. Count from the selected start date through the refund-grant date, counting every month or part of a month in the statutory period.
This rule prevents a taxpayer from treating a short final period as zero. It also means that a period crossing several calendar months must be counted consistently rather than converted into a daily pro-rata rate. The statute’s monthly method is the controlling method for a section 244A estimate.
8. Apply the simple-interest formula
After the principal, start date, end date, threshold and month count are settled, calculate:
Interest = eligible refund amount × 0.005 × number of counted months
Because the rate is monthly and simple, do not compound the result. Do not multiply by 0.5 as a whole number: 0.5% expressed as a decimal is 0.005.
Rank #4
Worked arithmetic example
Assume, purely for arithmetic illustration, that:
- The refund component eligible for section 244A interest is ₹50,000.
- The applicable start and grant dates produce four counted months or part-months.
- The 10% threshold and all other statutory conditions are satisfied.
The estimate is:
₹50,000 × 0.005 × 4 = ₹1,000
This example demonstrates the multiplication only. It does not establish that a real taxpayer has a four-month period, that ₹50,000 is the legally eligible principal, or that the refund qualifies for interest. Those conclusions require the taxpayer’s assessment records and payment history.
How to handle a refund with multiple components
A single refund credit can represent excess TDS, advance tax, self-assessment tax and a later adjustment. Those amounts may not share the same statutory start date. For each component:
- Identify the underlying payment or credit.
- Apply the start-date rule for that category.
- Apply the relevant threshold and rounding treatment.
- Count months through the applicable refund-grant date.
- Calculate interest separately before adding the permitted component amounts.
The department’s computation may already show a component-wise calculation. If it does, reconcile your worksheet to that computation rather than replacing it with one blended period. If the refund arose from an appellate, reassessment or rectification proceeding, use the order and the provision governing that proceeding.
What the refund documents should tell you
Use the processing or assessment intimation and the refund record to check:
- Whether the refund was determined under section 143(1), regular assessment or a later order.
- Which taxes and credits created the refund.
- The assessed-tax figure used for any 10% comparison.
- The principal refund amount used for interest.
- The period and grant date used by the department.
- Whether interest was reduced, withheld or otherwise affected by an adjustment recorded in the order.
If your arithmetic differs, isolate the first point of difference: governing law, refund source, filing timeliness, start date, grant date, month count, threshold or rounding. Recalculating the same formula repeatedly will not resolve a wrong input.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Common mistakes and how to correct them
Using the bank-credit date as the start date
The bank-credit date is not generally the accrual start date. Return filing, payment and assessment-year rules determine the start. Use the legally relevant date for the refund source.
Stopping interest at the processing date
Interest ordinarily runs through the date the refund is granted. Check the refund record instead of assuming that processing and grant occurred on the same day.
Best Value
- It can be a gift option
- Comes with secure packaging
- Helpful in various ways
Using a daily rate
Section 244A uses 0.5% per month or part of a month for the covered categories. A daily pro-rata calculation can produce a different result and is not the stated statutory method.
Compounding the monthly amount
The provision describes simple interest. Adding each month’s interest to the principal and charging interest on that enlarged amount is incorrect for this calculation.
Applying the 10% test to every refund
The threshold applies to specified section 244A branches. It is not a blanket rule for every refund, including every refund arising from an order or a different payment category.
Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesRounding to the nearest rupee or upward
Rule 119A requires the relevant sum to be rounded down to a multiple of ₹100. The ₹8,489 to ₹8,400 example illustrates the direction of rounding.
Ignoring a late return
For advance-tax and TDS/TCS refunds, a late return generally shifts the start date from 1 April of the assessment year to the date the return was furnished. Confirm the actual furnishing date.
Applying section 244A to a post-1 April 2026 tax year without checking the new Act
The 2025 Act governs tax years beginning on or after 1 April 2026. The corresponding provision may require a different citation or detailed rule. Verify the current text before calculating.
A practical worksheet
Create one row for each refund component and fill in:
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
| Worksheet field | What to record |
|---|---|
| Tax year and assessment year | The year printed on the return, intimation or order. |
| Governing law | 1961 Act for the preserved pre-1 April 2026 tax years, or the applicable 2025 Act provision for later tax years. |
| Refund source | Advance tax, TDS/TCS, self-assessment tax, demand payment or another category. |
| Return due date and filing date | Needed where the source rule distinguishes timely and late filing. |
| Payment date | Record the relevant tax, penalty or demand-payment date. |
| Start date selected | State the rule used, not only the date. |
| Refund grant date | The date through which interest is counted. |
| Eligible refund amount | The principal after applying the applicable statutory treatment. |
| 10% threshold result | Record the assessed-tax comparison where section 244A(1)(a) or (aa) applies. |
| Rounded amount | Round down to the nearest ₹100 under Rule 119A where required. |
| Counted months | Include every month or part-month required by the rule. |
| Interest estimate | Eligible amount × 0.005 × counted months. |
Keep the worksheet with the intimation, payment challans or credit records and any later order. That record makes it possible to explain a difference between your estimate and the department’s figure.
When a precise personal amount cannot be calculated
A personal answer requires at least the refund amount, tax year, refund components, filing date, applicable due date, payment dates, assessed-tax figure and grant date. Without those records, a number is only an illustration. The ₹50,000 example above is not a taxpayer-specific entitlement.
Where the refund is connected to a demand payment, appeal, reassessment, rectification or several tax credits, the relevant order may control the period and principal. In those cases, follow the order and the text of the applicable provision rather than relying on the basic formula alone.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
Free tools Windows power users keep installed
One-click scans. No signup required.
