Overview: What is Discount Rate?
Understanding the Most Important Actuarial Assumption in Employee Benefit Valuation under AS 15, Ind AS 19 and IAS 19 (Updated for 2026)
The discount rate is the actuarial assumption used to convert future employee benefit payments into their present value for financial reporting purposes. Under AS 15, Ind AS 19 and IAS 19, it reflects the time value of money and is one of the most significant assumptions affecting the measurement of defined benefit obligations such as gratuity and leave encashment.
A company may expect to pay gratuity to an employee twenty years from now. A payment due decades in the future is not worth the same as the same amount paid today. The discount rate is what converts those future payments into today's value, making it one of the most influential assumptions in the entire actuarial valuation.
Discount Rate at a Glance
Why is the Discount Rate Important?
Because gratuity and pension obligations often stretch years into the future, small movements in the discount rate compound significantly over that horizon. A modest shift in the assumed rate can move the reported obligation by a meaningful amount, even though nothing about the underlying benefit promise has changed. That sensitivity is why accounting standards are specific about how the rate is selected, rather than leaving it to management judgement.
Government Bond Yields vs Corporate Bond Yields
| Aspect | Government Bond Yields | Corporate Bond Yields |
|---|---|---|
| Used under | AS 15 and Ind AS 19 (India) | IAS 19 where a deep market in high-quality corporate bonds exists |
| Selection basis | Market yields on government securities | Market yields on high-quality corporate bonds |
| Why used? | No deep market in high-quality corporate bonds exists in India | Reflects the time value of money in jurisdictions with a deep corporate bond market |
| Credit risk | Generally considered risk-free | Includes a credit spread over government bonds |
| Typical jurisdictions | India and other jurisdictions without a deep corporate bond market | IFRS jurisdictions with a deep corporate bond market |
| Maturity matching | Bond maturity should broadly match the expected timing of employee benefit payments | Same principle applies |
What is Leave Encashment Valuation?
What is AS 15?
What is Ind AS 19?
Frequently Asked Questions
“How is the discount rate determined?”
The discount rate is determined in accordance with the requirements of the applicable accounting standard. Under AS 15, it is generally based on market yields on government bonds at the valuation date. Under Ind AS 19 and IAS 19, it is based on market yields on high-quality corporate bonds where a deep market exists; otherwise, government bond yields are generally used. The selected rate should reflect the currency and estimated timing of the employee benefit payments.
“How often is the discount rate updated?”
Generally at each valuation date, so the rate reflects current market yields rather than an outdated assumption from a prior period.
“Should the highest government bond yield always be selected?”
No. The objective is not to select the highest available yield. The discount rate should reflect bond yields that are appropriate for the currency and estimated timing of the employee benefit payments.
“Why do liabilities increase when discount rates fall?”
A lower discount rate means future payments are discounted less aggressively, so their present value, and the recognised obligation, becomes larger.
“Does every company use government bond yields?”
Not globally. Companies in India generally do, but companies reporting under IAS 19 in deep corporate bond markets may use corporate bond yields instead.
Audit-Defensible Actuarial Practice
Institutional Standards · India & the GCCEvery valuation model, sensitivity analysis, and statutory disclosure prepared by True Infinity Consultants is personally reviewed and signed off by a qualified Fellow Actuary and IBBI Registered Valuer — not passed down a chain of juniors.