In short. On 20 years service full pension: if you are on the old pension scheme, yes, and you needed even less. Since 2006 a central employee who retires on superannuation with 10 years of qualifying service gets the full 50 per cent; 20 years is the point at which you can choose to leave early on that same pension. If you joined on or after 1 January 2004, the answer is different. This guide is for employees weighing voluntary retirement and pensioners whose pension looks short. Check your qualifying service first.
Is this your situation?
- You have about 20 years of service and are thinking of voluntary retirement.
- A colleague told you full pension still needs 33 years.
- You retired with 14 or 16 years of service and wonder if your pension was cut proportionately.
- You joined after 2004 and are unsure what 20 years gets you under NPS or UPS.
- Your qualifying service in the pension papers is a few months short of a milestone.
- You were compulsorily retired as a penalty and the pension is less than half your pay.
- You left one central post for another and fear the earlier years were lost.
In short
- Old pension scheme, superannuation: 10 years of qualifying service is enough for the full 50 per cent under Rule 44 of the 2021 Rules.
- Old pension scheme, leaving early: 20 years of qualifying service lets you seek voluntary retirement under Rule 43 with the same 50 per cent.
- Joined on or after 1 January 2004: you are on NPS or UPS, where 20 years does not mean a 50 per cent pension; UPS links its full assured payout to 25 years.
- Under 10 years: no pension, only a service gratuity, though nine years and nine months is rounded up to ten.
- Before you send any notice: get your qualifying service verified in writing, because a deducted period can drop you below 20 without warning.
20 years service full pension: the short answer for old pension staff
For a central government servant governed by the CCS (Pension) Rules, 2021, full pension means 50 per cent of emoluments or of average emoluments, whichever is more beneficial. Rule 44 grants that full rate to anyone who retires under the rules after at least 10 years of qualifying service. So a person who retires at 60 with 12 years gets the same percentage as someone with 35 years. The amount differs only because their last pay differs.
Twenty years matters for a different reason. It is the minimum qualifying service for voluntary retirement under Rule 43. Before 20 years, Rule 43 is closed to you. The only other door is FR 56(k), which depends on your age rather than your service, and resignation generally forfeits past service altogether. After 20 years, you can give three months' notice and retire with the full 50 per cent, worked out on your last pay or ten-month average as on the date you go.
So if the question is whether 20 years is enough, the honest answer for old pension staff is: it is enough to leave early on full pension, and it was never needed to get full pension at normal retirement. The pension is also subject to the minimum of Rs 9,000 and the ceiling of Rs 1,25,000 a month.
Where the 33-year figure came from, and why it still causes confusion
Until the Sixth Pay Commission, full pension needed 33 years of qualifying service. Anyone with less got a proportionate pension: 20 years of service meant 20/33 of the full amount. Voluntary retirees were given up to five years of added service, called weightage, to soften that cut. That is the system your father or senior colleagues remember.
With effect from 1 January 2006, the government dropped the link between full pension and 33 years. The 2021 Rules carry the same position forward. Weightage on voluntary retirement lost its purpose because a person with 20 years already reaches 50 per cent.
The 33-year figure has not vanished entirely. It survives in the gratuity formula: retirement gratuity is a quarter of emoluments for each completed six-monthly period, capped at 16.5 times emoluments, which is reached at 66 half-years, that is 33 years. A person leaving at 20 years gets gratuity of 10 times emoluments, not 16.5. So 33 years still affects your lump sum. It just no longer affects your monthly pension.
People who retired before 2006 with less than 33 years had their original pension cut proportionately, and later revisions dealt with that in different ways. If you or a parent fall in that group, the concordance and revision tables are a separate exercise, covered in our guide to pre-2016 pensioners and concordance tables.
Service length and pension by the way you leave
| How service ends | Service needed | What you get | Rule |
|---|---|---|---|
| Superannuation at 60 (old pension) | 10 years qualifying | 50 per cent of last pay or ten-month average | Rule 44 |
| Voluntary retirement on your notice | 20 years qualifying | Same 50 per cent; no weightage now | Rule 43 |
| Retirement after 30 years, by you or in public interest | 30 years qualifying | 50 per cent | Rule 42 |
| Premature retirement by government | Age or service under FR 56(j) | 50 per cent if 10 years done | FR 56(j); Rule 44 |
| Invalidated on medical grounds | Can be below 10 years in defined cases | 50 per cent; gratuity as per rules | Rule 39 |
| Compulsory retirement as a penalty | 10 years for pension | Two-thirds to full pension, as the authority decides | Rule 40 |
| Dismissal or removal | Not applicable | Nothing, unless compassionate allowance up to two-thirds is sanctioned | Rule 41 |
| Resignation | Not applicable | Past service forfeited, except a technical resignation to join another post | Rules on forfeiture |
| Less than 10 years at retirement | Below the minimum | Service gratuity, no monthly pension | Rule 44 |
| NPS member (joined 2004 or later, no UPS) | Any | Corpus; mostly annuity if you exit early | NPS rules |
| UPS member | 10 years minimum; 25 for full payout | Proportionate payout below 25 years; 50 per cent of last 12 months' average basic at 25 | UPS rules, 2025 |
Voluntary retirement pension after 20 years: how Rule 43 works
Rule 43 lets you retire at any time after 20 years of qualifying service by giving at least three months' notice in writing to your appointing authority. If the authority does not refuse before the notice period ends, the retirement takes effect on the date you named. You can ask for a shorter notice period, with reasons, and the authority may agree.
The authority can refuse in limited situations. The common ones are where you are under suspension, where a disciplinary proceeding is pending or about to start, or where a criminal case is pending. People who are on deputation and want to be absorbed elsewhere face separate rules. If you are refused, the refusal must be an order in writing, which you can challenge like any service order.
Withdrawing a notice needs the authority's approval, and the request should reach it before the intended date of retirement. Do not send a notice as a bargaining tool over a transfer or a posting. Departments do sometimes accept such a notice quickly, and then the person who never really wanted to go finds the door has closed behind them.
There is also a second route, FR 56(k), which works on age rather than service: Group A and B officers who joined before 35 can retire after turning 50, and others after 55, again on three months' notice. Pension in either case is the same 50 per cent if you have the minimum 10 years. Our page on premature retirement under FR 56(j) deals with the reverse situation, where the government retires you.
Minimum 10 years pension and the nine-years-nine-months rule
The floor for any pension under the 2021 Rules is 10 years of qualifying service. While counting, a leftover of three months or more is treated as a completed six-monthly period, and the department's own clarification is that nine years and nine months or more is treated as ten years for eligibility. A teacher who retires at 60 with nine years and ten months of service is entitled to pension, not just a gratuity.
If you fall short even after rounding, you get a service gratuity instead: half a month's emoluments for each completed six-monthly period. It is paid once. That is why the exact count of qualifying service in the last few years before retirement matters so much to late entrants, such as people who joined central service after a career elsewhere, or ex-servicemen re-employed in civil posts.
Invalid pension is the exception. A person retired on medical grounds before completing 10 years can still get pension under Rule 39, in the situations that rule defines. Our page on invalid pension after medical retirement looks at those cases and the duty to offer an alternative post first.
Proportionate pension: who still gets less than 50 per cent
Proportionate pension, in the old sense of a fraction of full pension tied to years of service, no longer applies to ordinary retirement under the old scheme. But some people still end up with less than half their pay, and it is worth knowing which group you are in.
The first group is penalty cases. Compulsory retirement as a penalty allows the authority to fix pension anywhere from two-thirds of full pension up to full pension. A dismissed or removed employee gets nothing unless compassionate allowance of up to two-thirds is granted under Rule 41. If you are in this group, the fight is about the penalty or the quantum, not about years of service.
The second group is people absorbed in a public sector undertaking or an autonomous body, who often receive pro rata pension for their government years under the terms of absorption. The third is NPS and UPS members, where the payout really does depend on years: UPS gives a proportionate payout between 10 and 25 years of qualifying service.
If you joined on or after 1 January 2004: what 20 years means for you
Central employees recruited on or after 1 January 2004 are on the National Pension System unless they fall in an exception. For them, 20 years of service does not produce a defined pension under Rule 44. On NPS, leaving before superannuation generally means most of the corpus must go into an annuity, so the monthly income depends on what was invested and the annuity rate.
The Unified Pension Scheme, notified on 24 January 2025 and effective from 1 April 2025, gives an assured payout of 50 per cent of the average basic pay of the last 12 months only after 25 years of qualifying service, with a proportionate amount from 10 years upward and a minimum of Rs 10,000 a month at 10 years. Voluntary retirement under UPS is allowed after 25 years, with the payout starting from the date you would otherwise have superannuated. The window for existing employees to opt in closed on 30 November 2025, so check any later notice that applies to you. Our guide on how the 25-year and 10-year marks work under UPS sets out the arithmetic.
Some post-2004 joinees were selected against vacancies advertised before 22 December 2003. The DoPPW order of 3 March 2023 gave them a one-time option to move to the old pension. If you fall in that group and the option was mishandled, the issue is covered on our old pension for pre-2004 vacancy recruits page. Compassionate appointees whose application was made on or before 31 December 2003 have also been brought under the old pension by a June 2026 order; check its conditions.
Qualifying service full pension: what counts toward your 10 or 20 years
The question of qualifying service full pension usually turns on a few periods that the office has left out. Your service starts counting from the date you took charge of your first post, whether substantive or temporary, provided it was followed by confirmation or continued without a break. Previous central government service, and in many cases service in a state government or an autonomous body, can count if you moved with proper permission and the rules on carrying over service were followed.
Extraordinary leave taken on a medical certificate, or for higher studies with sanction, generally counts. Extraordinary leave on private affairs generally does not. A suspension period counts only to the extent the competent authority treats it as duty after the case ends. Military service before civil employment can count in some cases if the person opted and refunded any gratuity as the rules require. Railway and some other casual workers who were granted temporary status have half of that temporary status period counted in many cases, then full service after regular absorption.
If any of these periods has been left out, the gap may be what keeps you below 10 or 20 years. That is the most frequent dispute we see on this topic, and our page on earlier, casual or military service left out of qualifying service explains how such claims are proved.
Advocate B.K. Singh on two things to settle before a VRS notice
Advocate B.K. Singh's first advice to anyone planning voluntary retirement is to obtain the verified qualifying service, in writing, before the notice goes. Ask the Head of Office to verify the service book and issue the qualifying service figure that will go into your pension papers. If it comes out at 19 years and 11 months because of an old leave entry, you want to know that while you are still in service and can fix it, not after the department has accepted your notice and you have a three-month gap to explain.
His second point is about timing. Pension is half of your last pay or ten-month average, and gratuity grows with each completed six-monthly period. Choosing a retirement date just after an annual increment, and after a six-monthly period of service is complete, can add a real sum over a lifetime of pension. He has seen people pick a date because it was a round number and lose an increment by a fortnight.
Before you apply for voluntary retirement: the order of steps
Get the service book verified
Ask for a copy of your service book or e-Service Book and check every break, leave entry and suspension order. Note what you think is missing.
Ask for a written qualifying service statement
Request the Head of Office to work out your qualifying service as on the date you plan to leave. Keep that letter; it is the base of every later calculation.
Check for anything pending
A pending inquiry, an unsettled advance or an audit objection can be a ground to refuse or delay. Clear what you can before giving notice.
Pick the date with care
Look at your next increment date and when the next six-monthly period of service completes. Choose a date that captures both if possible.
Give three months' notice in writing
Address it to the appointing authority through proper channel, name the exact date, and keep the receipt. If you want a shorter period, ask for it in the same letter with reasons.
Submit pension papers straight away
Use the Bhavishya portal or your department's system, with Form 4 for family details and Form 1 if you want to commute. A notice accepted without papers in place still leaves you waiting.
If the department refuses the notice, ask for the order in writing. A refusal without reasons, or on a ground the rule does not allow, can be challenged before the Tribunal.
A made-up example: a lab technician in Hyderabad at 21 years
Here's a made-up example. Sunita Reddy joined a central research laboratory in Hyderabad as a technician in 2005, on a post that, according to her appointment letter, had been advertised in November 2003. By 2026 she had 21 years and wanted to leave to care for her mother. Her colleagues told her she would get a full pension at 20 years. Some even told her she needed 33.
Both answers missed the real question. Because she joined after 1 January 2004, she was on NPS. The advertisement date mattered: a vacancy notified in November 2003 falls before the 22 December 2003 cut-off, so she should have been offered the old pension option under the March 2023 order. Her section had never put it to her. Without the old pension, voluntary retirement at 21 years would leave her with an NPS corpus and an annuity, and she was not eligible for the UPS early exit payout either, since that needs 25 years.
She held back the notice. She first wrote to the laboratory for her recruitment file and the advertisement, then sent a representation with those papers asking that her old pension option be accepted even though the office had never circulated it to her. The point of the example is not the outcome, which depends on the documents, but the order: check which scheme you are in, then check service, and only then talk about 20 years.
If your pension was fixed below 50 per cent: time and cost
| Stage | Usual time range | Cost in general terms |
|---|---|---|
| Asking for the service book and qualifying service statement | 2 to 6 weeks | No fee; RTI fee of Rs 10 if you go that way |
| Representation to the Head of Office with proof | Reply in 1 to 4 months, often longer near a pay commission | Postage only |
| CPENGRAMS grievance if there is no reply | Response commonly in 1 to 3 months | Nil |
| Original Application to the Tribunal | First hearing within weeks; final order often in 1 to 3 years | Rs 50 Tribunal fee under Rule 7 of the CAT (Procedure) Rules, to be confirmed with the registry; counsel's fee agreed in writing beforehand |
| Revised PPO after an order in your favour | 2 to 4 months, as the order directs | Nil, unless a contempt petition becomes necessary |
Where a short-pension or VRS dispute is heard
A refusal of voluntary retirement, a wrong count of qualifying service or pension fixed at less than 50 per cent are all service matters. For central government employees and pensioners they go to the Central Administrative Tribunal under Section 19 of the Administrative Tribunals Act, after a written representation. If the department has not decided your representation in six months, Section 20 lets you file anyway.
Serving employees file before the bench covering their place of posting. Retired people may file where they now ordinarily reside. A railway pensioner settled in Bhopal would go to the Jabalpur Bench, which covers Madhya Pradesh; a retired postal clerk living in Gurugram would go to the Principal Bench in Delhi.
Not everyone belongs at the Tribunal. CAPF personnel such as BSF and CISF members, and employees of banks and most PSUs, generally go to the High Court. State government employees go to their State Administrative Tribunal where one exists, or the High Court. Armed forces personnel go to the Armed Forces Tribunal. Our central government pension cases page explains the usual run of a pension case before the Tribunal.
Documents to gather before you rely on the 20-year mark
- First appointment letter and the joining report
- Any order of technical resignation or permission to apply elsewhere
- Service book or e-Service Book printout, with leave and suspension entries
- Orders regularising temporary status or ad hoc service
- Advertisement or vacancy circular for your recruitment, if you joined after 2003
- Your NPS PRAN statement or UPS option record, where relevant
- Discharge book and option papers if you have earlier military service
- Last ten months' pay slips and the latest pay fixation order
- Written qualifying service statement from the Head of Office
Railway, postal, defence civilian and Group A officers: small differences
Railway employees are now under the Railway Services (Pension) Rules, 2026, which replaced the 1993 Rules in January 2026. The broad position on 10 years for pension and 20 years for voluntary retirement is the same, but check the rule numbers and any railway-specific conditions in the current rules before writing a representation.
Departmental employees of the Department of Posts are covered by the CCS (Pension) Rules. Gramin Dak Sevaks are not; they are engaged under their own rules and receive benefits under a separate scheme, so the 20-year question does not apply to them in the same way. Defence civilians, such as storekeepers or MES staff, are under the same CCS Rules, but their pensions are now processed through SPARSH, and they should check the qualifying service shown there.
Group A officers have a further option under FR 56(k) from age 50 if they joined before 35. They are also the group most often affected by FR 56(j) reviews in the opposite direction, where the government retires them early in public interest.
Mistakes people make around the 20-year mark
- Counting from the wrong date. The date of first joining is not always the start of qualifying service, especially after a break or a change of post without proper permission.
- Resigning instead of retiring. A resignation letter, even after 22 years, can forfeit pension. Use the words of Rule 43 or FR 56(k), not the word resign. Our page on an exit treated as resignation deals with that problem.
- Assuming NPS staff get the same pension. If you joined after 2003, check your scheme first.
- Ignoring gratuity. Leaving at 20 years reduces gratuity sharply compared with 33 years, even though the pension percentage is unchanged.
- Sending notice during an inquiry. A pending disciplinary case can lead to refusal or to provisional pension only.
What to do now
Before acting on office talk about 20 years service full pension, find out which scheme you are in: old pension, NPS or UPS. Then get your service book checked and ask for a written statement of qualifying service. If you are on the old pension and have 20 years, you can plan voluntary retirement with a clear figure; if you are close to retirement with 10 years, you already qualify for full pension.
If your pension has already been fixed at less than half your pay, or service has been left out, write to your Head of Office with proof and keep a copy. For advice on your service record and pension papers, or for updates on how the pension rules are changing, contact Advocate B.K. Singh.
Frequently asked questions
Do I need 33 years for full pension in central government?
No. Since 1 January 2006, the old pension scheme gives the full 50 per cent on superannuation once you have 10 years of qualifying service. The 33-year figure now matters only for reaching the maximum gratuity.
Can I take voluntary retirement after 15 years and still get pension?
Not under Rule 43, which needs 20 years. FR 56(k) allows retirement on age grounds, after 50 or 55 depending on your group and age at entry, and pension follows if you have 10 years of qualifying service.
Is weightage still added to service on voluntary retirement?
No. Weightage made sense when full pension needed 33 years. Since a person with 20 years already reaches 50 per cent, it is no longer given.
I have 9 years and 10 months of service at retirement. Will I get pension?
Yes. Nine years and nine months or more is treated as ten years for pension, so you qualify for the full 50 per cent rather than a one-time service gratuity.
What does an NPS employee get after 20 years of service?
There is no fixed pension at 20 years. On NPS, an early exit sends most of the corpus into an annuity. Under UPS, the voluntary retirement payout needs 25 years and starts from the date you would have retired.
Can my department refuse my voluntary retirement notice?
It can, but only on grounds the rules recognise, such as suspension or a pending disciplinary or criminal case, and it must do so before the notice period ends. If it says nothing, the retirement takes effect on the date you gave.
Does the 20 years include my earlier service in another central department?
Usually yes, if you moved with proper permission or through a technical resignation. If the earlier period is missing from your service book, ask for it to be added with the relieving order and permission letter.
Is there any limit on how much pension I can get?
Yes. Pension under the 2021 Rules cannot be less than Rs 9,000 or more than Rs 1,25,000 a month, before dearness relief.
Advocate B.K. Singh
Founder of B.K. Singh & Associates. MCA, LL.B., LL.M. More than twenty years in practice before the Supreme Court, the Delhi High Court and other High Courts, the Central Administrative Tribunal and other tribunals. This guide was written and reviewed by his team.
This guide explains the law in general terms and is not legal advice. For advice on your own papers, contact the team.
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