The case below is a worked example, built to illustrate the sequence. The amounts are illustrative and do not constitute real data. Profile: a sole-proprietor consultant in Geneva, aged 48, net income between CHF 110 000 and CHF 190 000 depending on the year, no 2nd pillar since setting up in business.
First reflex: request the pension certificate from the fund. Three lines matter. The maximum buy-in amount, which measures the gap. The conversion rate applicable at the target retirement age (65). The rules on capital or pension. In the worked example, the gap shown is CHF 380 000.
A self-employed person who joins an optional fund or a collective foundation may buy in up to this gap, in accordance with the regulations and the law (art. 79b LPP). Failing affiliation, the LPP Substitute Occupational Benefit Institution (Fondation institution supplétive LPP) accepts self-employed persons on a voluntary basis.
Reading rule: the maximum buy-in amount on the certificate is not a target, it is a ceiling. Between a CHF 380 000 gap and volatile net income, the timing matters as much as the amount.
The tax ceiling is set by federal law and the cantonal administrations: only the portion actually bought in within the limits of the regulations is deductible. Check the figures for the current year before any payment, as they are indexed regularly.
Indicator
Value
Context
Initial pension gap
CHF 380'000
Maximum buy-in amount on the pension certificate: a ceiling, not a target (art. 79b LPP)
Large buy-in in year 1
CHF 150'000
Paid in one go in December, for a net income of CHF 140'000, without a marginal rate calculation
Deduction not used at the right rate
CHF 12'000
Cost of the year 1 mistake, plus a private overdraft at the expense of the operating reserve
Annual payments for the CHF 230'000 balance
5 × CHF 46'000
Made in November or December, once the year's income is known
Safety margin on net income
20 %
Each payment is capped at the year's net income minus 20 %
Lock-in per buy-in
3 years
No capital withdrawal (EPL in particular) of benefits arising from a buy-in (art. 79b para. 3 LPP)
Initial pension gap
ValueCHF 380'000
ContextMaximum buy-in amount on the pension certificate: a ceiling, not a target (art. 79b LPP)
Large buy-in in year 1
ValueCHF 150'000
ContextPaid in one go in December, for a net income of CHF 140'000, without a marginal rate calculation
Deduction not used at the right rate
ValueCHF 12'000
ContextCost of the year 1 mistake, plus a private overdraft at the expense of the operating reserve
Annual payments for the CHF 230'000 balance
Value5 × CHF 46'000
ContextMade in November or December, once the year's income is known
Safety margin on net income
Value20 %
ContextEach payment is capped at the year's net income minus 20 %
Lock-in per buy-in
Value3 years
ContextNo capital withdrawal (EPL in particular) of benefits arising from a buy-in (art. 79b para. 3 LPP)
On a CHF 380'000 gap, a single payment of CHF 150'000 cost CHF 12'000; five payments of CHF 46'000 avoid it
Key takeaway
Staggering the buy-in over 5 years, capping each payment at 80 % of net income, preserves the deduction and the cash position.
Source: Art. 79b LPP — fedlex.admin.ch (illustrative worked example, amounts not real)
Year 1: a large buy-in decided without a marginal rate
In December of year 1, the consultant pays in CHF 150 000 in one go. Reason: a good financial year, the wish to reduce tax. No prior calculation of the marginal rate.
Problem 1: the deduction. The buy-in is deductible from taxable income, but only up to the amount of that income. With a net income of CHF 140 000 and a buy-in of CHF 150 000, part of the deduction is lost, or carried forward depending on cantonal treatment, which should be validated with the fiduciary. The Geneva marginal rate for a single person at this income level lies in a high range, but it falls as the deduction eats into the income. The last franc deducted is worth less than the first.
Problem 2: liquidity. CHF 150 000 leave the business's cash position in December. Tax instalments, AVS/AI/APG contributions and the loss-of-earnings (sickness) insurance premium (IJM) fall due in January. The self-employed person draws on their private account to cope.
Problem 3: social contributions. The LPP buy-in does not reduce the income subject to AVS/AI/APG. It therefore reduces only tax, not social contributions. Many professionals are unaware of this and overestimate the saving obtained.
Cost of the mistake in the worked example: approximately CHF 12 000 of deduction not used at the right rate, plus a private overdraft financed at 0 % but at the expense of the operating reserve. Correction adopted: cap each payment at the year's net income minus a 20 % safety margin.
Year 2: the EPL withdrawal and the 3-year lock-in
In year 2, the self-employed person decides to buy an apartment in Carouge. They request an EPL (home ownership promotion) withdrawal of CHF 100 000. Refused as it stands: they made a buy-in the previous year.
The rule: benefits arising from a buy-in may not be withdrawn as capital within 3 years of payment (art. 79b para. 3 LPP). This applies in particular to withdrawals for home ownership. The December year 1 payment is locked until December of year 4.
Concrete consequence: the financing of the down payment must be found elsewhere. In the worked example, the self-employed person liquidates their pillar 3a (early withdrawal for housing) and borrows the difference from the bank. Estimated cost: CHF 4 000 to CHF 6 000 of additional mortgage costs in the first year, plus tax on the 3a withdrawal levied separately.
A heavier sanction exists: if the improper withdrawal is established after the fact, the tax administration may refuse the deduction of the buy-in. It does not apply here, because the request was refused before execution. But it applies to any use of the capital within the 3-year period.
Corrected lever: before any buy-in, list the foreseeable capital outflows over 3 years (housing, move abroad, cessation of activity). If one of them is likely, do not buy in, or buy in less.
Year 3: staggering over 4 to 5 years, then planning the exit
After two years of corrections, the plan is set out on a timeline. The remaining gap is CHF 230 000. It is spread over 5 annual payments of approximately CHF 46 000, made in November or December, once the year's income is known.
Three measurable advantages. First, each payment fits within the realistic net income range, so the deduction is used in full. Second, each payment is made at the highest marginal rate of the year, because it is adjusted to actual profit. Third, each buy-in starts its own 3-year lock-in period, which is manageable if no capital withdrawal is planned before retirement.
For the exit, the useful rule: spread capital withdrawals over several tax years, and over several institutions (pension fund and vested benefits accounts), because tax on capital benefits is progressive. A single withdrawal of CHF 400 000 costs more than four withdrawals of CHF 100 000 spread over four years.
Capital or pension decision: to be weighed against the conversion rate on the certificate and life expectancy. For a self-employed person with no spouse or heir to protect, the pension is often less advantageous. For a self-employed person with real estate assets, staggered capital is more so. These choices require an individual simulation.
Step
Timing
Detail
1. Year 1: large buy-in without a marginal rate calculation
Year 1 (December)
Payment of CHF 150'000 in one go, for a net income of CHF 140'000: deduction partly lost or carried forward depending on the canton. Cash drained before the January tax instalments, AVS/AI/APG contributions and IJM premium. The buy-in does not reduce AVS/AI/APG contributions. Cost: approximately CHF 12'000 of deduction not used at the right rate. (Self-employed person / pension fund)
2. Year 2: EPL withdrawal refused, 3-year lock-in
Year 2 (lock-in until December of year 4)
The EPL withdrawal of CHF 100'000 for an apartment in Carouge is refused: benefits arising from a buy-in cannot be withdrawn as capital for 3 years (art. 79b para. 3 LPP). Financing through early withdrawal of pillar 3a plus a bank loan: CHF 4'000 to CHF 6'000 of additional mortgage costs, plus tax on the 3a withdrawal. (Pension fund / Bank)
3. Year 3: remaining gap staggered over 5 payments
Year 3 onwards (November or December)
Remaining gap of CHF 230'000 spread over 5 annual payments of approximately CHF 46'000, made once income is known. Deduction used in full, payment adjusted to the highest marginal rate of the year, each buy-in starts its own 3-year lock-in period. (Self-employed person / fiduciary)
1. Year 1: large buy-in without a marginal rate calculation
TimingYear 1 (December)
DetailPayment of CHF 150'000 in one go, for a net income of CHF 140'000: deduction partly lost or carried forward depending on the canton. Cash drained before the January tax instalments, AVS/AI/APG contributions and IJM premium. The buy-in does not reduce AVS/AI/APG contributions. Cost: approximately CHF 12'000 of deduction not used at the right rate. (Self-employed person / pension fund)
2. Year 2: EPL withdrawal refused, 3-year lock-in
TimingYear 2 (lock-in until December of year 4)
DetailThe EPL withdrawal of CHF 100'000 for an apartment in Carouge is refused: benefits arising from a buy-in cannot be withdrawn as capital for 3 years (art. 79b para. 3 LPP). Financing through early withdrawal of pillar 3a plus a bank loan: CHF 4'000 to CHF 6'000 of additional mortgage costs, plus tax on the 3a withdrawal. (Pension fund / Bank)
3. Year 3: remaining gap staggered over 5 payments
TimingYear 3 onwards (November or December)
DetailRemaining gap of CHF 230'000 spread over 5 annual payments of approximately CHF 46'000, made once income is known. Deduction used in full, payment adjusted to the highest marginal rate of the year, each buy-in starts its own 3-year lock-in period. (Self-employed person / fiduciary)
A large buy-in in year 1 costs CHF 12'000 and locks the housing down payment for 3 years; staggering corrects both mistakes
Key takeaway
Cap each payment at net income minus 20 %, check the foreseeable capital outflows over 3 years, then stagger the remaining gap over 5 years.
Source: Art. 79b LPP, para. 3 — fedlex.admin.ch. Illustrative worked example: the amounts do not constitute real data.
The figures of the outcome, compared with pillar 3a
Review of the worked example over 3 years, everything is illustrative.
Annual tax saving on the buy-ins, at an effective marginal rate of 30 to 36 % (indicative range for Geneva at this income level, to be confirmed by the fiduciary):
Year 1: CHF 150 000 bought in, deduction partially used, actual saving around CHF 38 000
Year 2: no buy-in (lock-in and property purchase)
Year 3: CHF 46 000 bought in, saving of approximately CHF 15 000
Cumulative: approximately CHF 53 000 over 3 years for CHF 196 000 paid in. With staggering from the outset, the same sum would have produced a higher saving, in the order of CHF 8 000 to CHF 12 000, depending on the distribution of income.
Net return: the capital bought in earns interest at the rate set by the fund's regulations, often close to the minimum LPP rate set by the Federal Council. The real return comes mainly from the tax saving, not from the interest rate.
Comparison with pillar 3a. A self-employed person without a 2nd pillar may pay in up to 20 % of their net income, capped at an indexed annual amount (large 3a). A self-employed person affiliated to a pension fund is limited to the small 3a, which is significantly lower. These ceilings change every year: read the current year's amount on the OFAS (Federal Social Insurance Office) website before paying in.
Priority rule: first cap the 3a at the maximum permitted, then top up with the LPP buy-in if the gap allows. The LPP buy-in offers a much higher ceiling, but locks the capital for 3 years and depends on the fund's regulations.
The detail of risk cover, including loss-of-earnings (sickness) insurance (IJM) and business liability insurance, is settled separately: the buy-in changes nothing there. For the household's other insurance items, see the comparison on car insurance in Switzerland, whose premiums weigh on the same liquidity.
"This article, published by assurance-genevoise.ch (FINMA F01502264), is for general information only on LPP (occupational pension) buy-ins for the self-employed in Switzerland; it does not constitute legal, tax or pension advice, and cannot replace the personalised opinion of a qualified specialist."
FAQ
Yes, if they are affiliated to a pension fund or a collective foundation, up to the maximum buy-in amount shown on their pension certificate (art. 79b LPP). The fund's regulations set the conditions.
Simulate your LPP buy-in with a broker
The right buy-in timeline depends on your income, your fund and your canton. A broker or a fiduciary will work out the scenario suited to your situation.