LPP buy-backs: when it is worth it, when it is a trap.
The LPP buy-back is one of the rare tax optimizations accessible to employees in Switzerland. You still need to understand the mechanics, the deadlines, and the capital withdrawal trap.
The LPP buy-back is one of the very rare tax optimizations still accessible to employees in Switzerland. You pay money into your pension fund to close a "pension gap", and the amount is fully deductible from the taxable income of the year. On paper, unbeatable. In practice, precise rules ensure it is not a pure tax gift.
What is a pension gap
At each age, your fund calculates the "theoretical maximum" assets you would have if you had contributed without interruption at the maximum rate on your current salary. The difference between this maximum and your actual assets = your gap. You can close it via buy-backs.
Typical causes of a gap:
- Career started late (studies, PhD).
- Periods abroad without LPP contribution.
- Periods without employment (long unemployment, parental leave, sabbatical).
- Significant salary increase (the gap widens mechanically).
- Fund change with transferred assets lower than theoretical.
The calculation: how much can I buy back
The maximum buy-back amount appears on your annual pension certificate. If not shown, your fund can calculate it free of charge on request.
| Element | Amount |
|---|---|
| Current coordinated salary | CHF 60,000 |
| Theoretical maximum assets at 45 (LPP formula) | CHF 280,000 |
| Current actual assets | CHF 195,000 |
| Gap = possible buy-back | CHF 85,000 |
The tax lever: how much you actually save
Taxable income of CHF 145,000. Vaud + municipal marginal bracket ≈ 32% (2024 estimate). Available gap of CHF 60,000. Decides to buy back CHF 30,000 this year.
- Buy-back paid to the fund
- CHF 30,000
- Marginal tax bracket
- ~32%
- Taxable income before buy-back
- CHF 145,000
- Tax saving in the year of buy-back
- ~CHF 9,600 32% × CHF 30,000
- Real net cost of the buy-back
- CHF 20,400 CHF 30,000 paid − tax saving
- Effective capital in the fund
- CHF 30,000 which will compound until retirement
The trap: the 3-year lock-up rule
Article 79b LPP sets a strict rule: no capital withdrawal is permitted within 3 years following a buy-back. This targets the following withdrawals:
- Capital withdrawal at retirement.
- Withdrawal for a home purchase (EPL).
- Withdrawal for self-employment.
- Withdrawal on permanent departure from Switzerland.
When the buy-back is relevant — the checklist
Six conditions for a buy-back to be clearly positive:
| Criterion | Why |
|---|---|
| You are in a high marginal bracket (>25%) | The tax saving is proportional to your marginal rate |
| You plan to take the annuity at retirement | The buy-back is permanently integrated into your pension with no lock-up risk |
| You have more than 3 years before any withdrawal | The 3-year lock-up is respected |
| You have available liquidity | The buy-back is not refundable and immediately locks the capital |
| Your fund offers a satisfactory return | The buy-back must generate a reasonable yield until retirement |
| You also want to rebuild risk coverage | The buy-back increases assets, so death/disability benefits |
When the buy-back is a trap
Three cases where it is better to abstain:
- You plan a capital withdrawal within 3 years (retirement, EPL, self-employment, departure). The buy-back will be cancelled fiscally.
- You are in a low marginal bracket (< 20%). The tax saving is not enough to offset the capital lock-up.
- You have no other available savings. The buy-back locks the capital until 60-65 (except legal cases). In case of urgent cash need, it is not accessible.
Advanced optimization: combining buy-back + transfer + staggered withdrawal
For high incomes with significant assets, several levers combine:
- Staggered buy-backs over 5-10 years before retirement to maximize annual tax deductions in the top bracket.
- Transfer to a favorable canton at least 12 months before the final withdrawal (see our cantonal comparison).
- Staggered withdrawal across 2-3 tax years (LPP + vested benefits + 3a separately).
- Annuity + lump sum mix at retirement (see our dedicated article).
Common mistakes
- Buying back within 2 years before retirement. The capital withdrawal will be fiscally blocked. Either take everything as annuity, or wait 3 years after the buy-back.
- Buying back without checking the fund's interest rate. A fund paying 1% on the extra-mandatory for 15 years generates much less than a diversified investment outside LPP.
- Buying back when assets are scattered. If you have untransferred vested benefits, buying back into the active fund increases dispersion without optimizing the whole. Consolidate first.
- Buying back in a year of exceptional income. If you receive a large bonus one year, it is tempting — but check that the marginal bracket fully absorbs the amount.
- 01The buy-back is 100% deductible from taxable income in the year of payment — a powerful tax lever for high incomes.
- 023-year lock-up before any capital withdrawal. Otherwise, the administration cancels the deduction.
- 03Relevant if: marginal > 25%, withdrawal far away, available liquidity, fund with good return.
- 04Combinable with prior cantonal transfer and staggered withdrawal over several years to maximize the net effect.
To understand your current gap, read our guide reading the pension certificate. To optimize the withdrawal canton, our cantonal comparison. For the full 50+ checklist, our pre-retirement guide.