Formula used
Interest on an employee's own provident fund contributions above a yearly threshold is taxable. Rule 9D gives effect to this by requiring the fund to be maintained as two notional accounts, one holding non-taxable contributions and the other holding contributions above the threshold. Interest is credited to each account separately and only the interest arising in the taxable account is charged to tax. Both balances carry forward, which is the feature people underestimate: once a taxable balance exists it keeps earning taxable interest in later years even if contributions fall back below the threshold. The threshold is two lakh fifty thousand rupees where the employer also contributes to the fund and five lakh rupees where the employer makes no contribution, which is the position for many government employees. Tax is deducted at source at ten per cent under section 194A once accrued interest for the year exceeds five thousand rupees, or at twenty per cent where PAN is not linked.
Example calculation
An employee contributing Rs 4,00,000 a year to a fund where the employer also contributes crosses the Rs 2,50,000 threshold by Rs 1,50,000. That excess goes into the taxable account. At an interest rate of 8.25 per cent the first year produces about Rs 12,375 of taxable interest, on which TDS of about Rs 1,238 applies because the amount exceeds five thousand rupees. In the second year the taxable account holds the previous balance plus its interest plus a further Rs 1,50,000, so the taxable interest rises even though the contribution has not changed. The interactive calculator projects that compounding across as many years as you choose.
How to use this calculator
- Enter your own annual contribution, including any voluntary provident fund.
- Set the threshold to Rs 2,50,000 if your employer also contributes, or Rs 5,00,000 if it does not.
- Enter the interest rate credited by the fund for the year.
- Enter any taxable balance carried forward from earlier years.
- Read the split between the taxable and non-taxable accounts and the interest arising on each.
- Use the interactive projection to see how the taxable balance compounds over several years.
Important assumptions
- Only the employee's own contributions, including voluntary provident fund, count towards the threshold.
- Interest is credited at the same rate to both notional accounts.
- Interest is applied to the opening balance plus the whole year's contribution rather than monthly running balances.
- TDS applies at ten per cent where accrued interest exceeds five thousand rupees and PAN is linked.
- The threshold entered matches your employer contribution position.
Common mistakes to avoid
- Adding employer contributions to the threshold test, which overstates the taxable portion.
- Assuming the taxable account clears once contributions drop below the threshold.
- Treating TDS as the final tax when the interest is taxable at your own slab rate.
- Using the two lakh fifty thousand threshold where the employer makes no contribution and five lakh applies.
- Forgetting that voluntary provident fund contributions count towards the same threshold.
Why the taxable account never really goes away
Most explanations of the rule stop at the contribution split, which makes it sound like a one-year problem for high earners. The consequential part is that both notional accounts carry forward. A single year of heavy voluntary contribution creates a taxable balance that earns taxable interest for as long as the fund exists, and that interest compounds. Someone who crossed the threshold once, years ago, can still be receiving a taxable interest figure and a TDS deduction today without contributing anything above the limit since.
- The split is applied to contributions, but the balances persist.
- Taxable interest compounds on the carried-forward balance.
- One heavy year can create a liability that recurs indefinitely.
Source and methodology
Last reviewed: August 2026
This calculator uses the formula and assumptions described on this page. Interest on an employee's own provident fund contributions above a yearly threshold is taxable. Values are calculated in-browser from user-entered inputs and are not saved by default. Verify tax, regulatory, lender, scheme or product rules with the relevant official source where applicable.
Calculation version: rule-9d-2026.1 · Facts checked: 2026-08-25
Next review trigger: Any change to the Rule 9D thresholds, the TDS rate under section 194A, or the interest rate declared by EPFO.
Educational estimate only. RupeeKit does not provide personalized financial, investment, legal, tax or loan advice.
Related calculators and guides
You can cross-check this estimate using: salary in-hand calculator, Old vs New Tax Regime Calculator, 80C deduction calculator, EMI calculator, ITR-2 filing guide, emergency fund guide.
When this tool is useful
- When you want a fast estimate before making a financial or salary decision.
- When you want to compare different assumptions in seconds.
- When you want to understand the formula behind the result.
