Commutation of Pension — Rules, Calculation Table & Restoration After 15 Years

Almost every retiring Central Government employee asks the same question: "Should I commute part of my pension for a lump sum, or take the full monthly pension?" This article explains exactly how commutation works, how the lump sum is calculated using the commutation factor table, and what the famous "15-year restoration" rule means for your monthly pension in later life.

What Is Commutation of Pension?

Commutation of pension means converting a part of your monthly pension into a one-time lump sum payment. In exchange for this lump sum, your monthly pension is reduced by the corresponding commuted portion — but only for a fixed period, after which the full pension is restored.

This is governed by the provisions relating to commutation under the CCS (Pension) Rules, 2021, read with the CCS (Commutation of Pension) Rules.

How Much Pension Can Be Commuted?

A Central Government employee can commute up to 40% of their basic pension. This is the maximum permissible limit — an employee may choose to commute less than 40%, but not more.

The Commutation Factor Table — How It Works

The lump sum amount you receive depends on your age on your next birthday after the date your commutation becomes "absolute" (generally the date of retirement, for applications made within the prescribed time limit). The younger you are, the higher the commutation factor — because the Government expects to pay you the "restored" full pension for a longer remaining lifetime, so a younger pensioner gets a proportionately larger lump sum for the same percentage commuted.

The general formula is:

Illustrative commutation factors (these are approximate and for illustration only — always refer to the official, currently notified commutation table for exact figures applicable to your case):

⚠️ The figures above are illustrative only, intended to show the declining trend with age. For the exact commutation factor applicable to your case, refer to the latest official Commutation Table notified by the Government, available with your Pension Disbursing Authority or on the official DoPPW website.

Worked Example: Calculating the Lump Sum

Suppose Shri Anil Sharma retires at the age of 60, with a basic monthly pension of ₹50,000. He decides to commute the maximum permissible 40%.

• Amount of pension commuted = 40% of ₹50,000 = ₹20,000 per month
• Age next birthday at the time commutation becomes absolute = 61 years (illustrative commutation factor ≈ 8.94)
• Lump sum = ₹20,000 × 12 × 8.94 = ₹21,45,600 (approximately)

After commutation, Shri Sharma's monthly pension reduces from ₹50,000 to ₹30,000 (i.e., ₹50,000 − ₹20,000). However, Dearness Relief continues to be calculated on the original ₹50,000 pension, not the reduced ₹30,000 — this is an important point that many pensioners overlook.

The 15-Year Restoration Rule

This is one of the most pensioner-friendly provisions in the commutation framework. After 15 years from the date of retirement (i.e., from the date the reduction in pension on account of commutation took effect), the commuted portion of the pension is restored — meaning the pensioner's monthly pension reverts to the full (original) amount.

Continuing the example above:

• From retirement until the 15-year mark, Shri Sharma receives ₹30,000 per month (plus DR calculated on ₹50,000).
• After 15 years, his monthly pension is restored to the full ₹50,000 (plus DR), even though he had already received the ₹21.45 lakh lump sum at the time of retirement.

This restoration happens automatically in most cases through the Pension Disbursing Bank/Authority, but pensioners are advised to confirm with their bank around the 15-year mark to ensure the restoration is correctly applied.

When Should You Apply for Commutation?

Commutation can be applied for:

• Along with pension papers at the time of retirement — in this case, the "age next birthday" is generally reckoned from the date following the date of retirement, and no fresh medical examination is required.
• After retirement (within one year of retirement) — also without medical examination in many cases.
• After one year of retirement — in this case, the pensioner is generally required to undergo a medical examination by the prescribed medical authority, and the commutation becomes absolute only from the date the medical authority declares the pensioner fit, with the commutation factor based on age next birthday as on that later date.

Should You Commute? Factors to Consider

Common Errors and Misunderstandings

• Confusing commutation with withdrawal of GPF — these are entirely separate. GPF is your own accumulated savings; commutation is converting a portion of your future pension entitlement into a present lump sum.
• Assuming DR is calculated on the reduced pension — incorrect. DR is always calculated on the original, pre-commutation pension amount.
• Forgetting that commutation affects family pension calculations differently — family pension is generally calculated on the basis of the pay last drawn by the deceased, not on the commuted/reduced pension, so commutation by the original pensioner generally does not reduce the family pension payable to survivors.
• Missing the one-year window — applying for commutation after one year of retirement requires a medical examination, which can add delay and, in rare cases, result in a lower commutation factor if the medical authority assigns an "additional age" due to health conditions.

Impact of Pay Commission Revisions on Commuted Pension

Whenever a new Pay Commission's recommendations are implemented, pensions are revised — and this naturally raises the question of how the commuted and non-commuted portions are treated. The general approach followed has been:

• The pensioner's full (notional) pension is first revised as per the new Pay Commission formula, exactly as if no commutation had taken place.
• The already-commuted amount (in absolute rupee terms, as it stood at the time of commutation) is then deducted from this revised full pension to arrive at the revised reduced pension payable monthly.
• Dearness Relief continues to be calculated on the revised full (pre-commutation) pension, not on the reduced pension.

This means that even though a pensioner commuted, say, ₹20,000 of their pension years ago, the rupee amount deducted from their monthly pension generally remains ₹20,000 even after Pay Commission revisions — it is the "full pension" base (on which DR is calculated, and from which this fixed amount is deducted) that increases. Pensioners are advised to request a written calculation sheet from their Pension Disbursing Bank after each Pay Commission revision, to confirm that their reduced pension and DR have been correctly recalculated on this basis.

What Happens If You Never Apply for Commutation?

There is no compulsion to commute any part of your pension. Many pensioners — particularly those without an immediate need for a lump sum, or those who prioritise a stable, undiminished monthly income — choose not to commute at all. In such cases:

• The pensioner continues to receive 100% of their pension every month, with DR applied on the full amount, for their entire pensionable life.
• The commutation option does not "expire" in the sense of being lost forever for most pensioners — however, as discussed above, applying after the initial window typically requires a medical examination, which adds a procedural step.
• On the pensioner's death, family pension (governed by Rule 50, and discussed in our dedicated article on family pension rules) is calculated based on the pay last drawn — the decision to commute or not commute the individual's own pension generally has no bearing on the family pension amount payable to survivors.

Frequently Asked Questions (FAQ)