AHV after moving to Switzerland: how to check contribution gaps
Anyone who arrived in Switzerland as an adult should review Swiss AHV years and pension rights earned elsewhere separately.
Updated 30 September 2026Why moving to Switzerland later affects your pension
Someone who moves to Switzerland at 35 from Portugal, Germany or another country arrives with work experience, income and perhaps pension rights already built up. For the Swiss AHV, however, the first question is how long that person was covered by the Swiss system. A Swiss old-age pension can therefore be well below the full maximum that is often quoted. This does not make earlier employment abroad worthless: foreign pension rights need to be checked separately. A useful plan puts both parts on one page. Record the date you moved, every country where you worked, the years with Swiss income subject to AHV contributions and the age at which you expect to retire. Also list periods without a salary, including study, caring for children, self-employment, unemployment and time abroad. A move by itself does not prove whether a contribution year exists or is missing; the applicable insurance rules must be checked for the actual situation. Consider someone who arrives at 35 and remains employed in Switzerland until 65. They might accumulate roughly 30 Swiss contribution years. That is not yet a pension calculation, because income, credits, age and special rules also matter. It does show why a full Swiss AHV pension should not be copied into a retirement budget without checking. Compare the income you can reasonably expect with your projected living costs, and identify any missing information before deciding how much more to save.
Contribution years and earnings are separate factors
The AHV calculates an old-age pension using the contribution period and the relevant average annual income. In some situations, credits for bringing up children or caring for others also affect the calculation. A complete contribution period generally covers 44 years. Missing years usually lead to a partial pension. A rough calculation based on forty-fourths can show the scale of a possible difference, but it cannot replace an individual forecast from a compensation office. After a later move to Switzerland, a shorter period can have several causes: years before Swiss coverage began, unpaid contributions during a stay here or subsequent years spent abroad. The options for correcting these situations are different. A salary of CHF 120,000 on its own does not guarantee the full Swiss AHV maximum when contribution years are missing. Equally, someone with no breaks but lower earnings may receive less than the maximum. Keep monthly and annual figures distinct. From 2026, people entitled to an old-age pension in December receive an additional 13th old-age payment. Its amount reflects old-age pensions paid during that year. It does not close contribution gaps or turn a partial pension into a full one. It applies to old-age pensions only. Disability and survivors' pensions continue to be paid twelve times a year. When you prepare an annual retirement budget, show the 13th old-age payment correctly; when you model disability or death, use the relevant twelve-payment rules and check other available benefits separately.
Start with your individual AHV account statement
The individual AHV account, usually called the IK, records earnings subject to contributions, contribution periods and other information relevant to a future pension. Request a consolidated statement through AHV/IV or a compensation office. The statement is free. One office can obtain entries held by other offices, which matters if you have changed employers or cantons. Do not simply compare every annual entry with your current salary. First, check that there is an entry for each year in which you believe you contributed. Then look for unexpectedly low earnings. If you earned CHF 72,000 from insured Swiss employment and the statement shows only a small portion, ask for an explanation. Remember that earnings for the current year usually appear only on the following year's statement; their absence alone is not evidence of an error. Pay particular attention to years with multiple employers, short contracts or self-employment. Gather salary certificates, payslips, employment agreements and AHV contribution records for those periods. When you report a possible discrepancy, provide the year, employer and supporting document. Keep copies of your correspondence and the compensation office's reply. The IK statement is a record-checking tool, not a promise of the eventual pension amount. To estimate that amount, request a separate pension forecast and ask which future earnings and other assumptions it uses.
Separate arrival, residence registration and first employment
In real life, arrival in Switzerland, registration with the municipality and the first day of a job do not always coincide. Write down all three dates. Someone who arrived in October but started work the following January should examine that first Swiss calendar year separately. If you worked for a Swiss employer before moving, the applicable social security rules also need to be checked. A partial year or a small salary does not automatically amount to a complete contribution year. The quick formula of 65 minus age at arrival is only a starting point. Take Ana as an example. She moved to Zurich in March 2014, began work in June, took a family break in 2018 and returned part-time in 2020. She builds a timeline showing residence, employment, insurance status, employers and family events for each year. She then compares it with the IK statement. It may turn out that her working spouse's contributions covered the family break under the legal conditions. Alternatively, she may have owed a contribution as a person without gainful employment. The compensation office must assess the facts. The timeline also stops years of work in Portugal being mistakenly presented as Swiss AHV years. If you plan to leave Switzerland again, add the expected departure date. You can then see how many future Swiss years are realistically possible and what questions remain unresolved.
A genuine gap or a missing entry?
An empty or unusual year on the IK can have two very different explanations. You might not have been insured in Switzerland, or contributions that were due might not have been paid. Alternatively, contributions may have been deducted from your wages but not correctly entered in the account. Review the evidence before treating a year as lost. Compare your salary certificate, payslips and previous employer details for the year concerned. Ask the compensation office for a written clarification. Say explicitly whether you are asking it to correct an existing contribution record or to assess a possible late payment. This distinction matters because the five-year rule for paying overdue contributions does not explain every kind of account correction. Answer follow-up questions fully, especially when there were several employers, daily allowances, temporary contracts or continued salary payments. Someone who worked in Zurich in 2019 and 2020 and can see AHV deductions on their payslips should not simply write off those years because an initial statement looks incomplete. Conversely, an employment contract without wages paid does not prove a contribution. Keep a case note for each issue: year, possible cause, documents submitted, decision received and next step. This avoids reconstructing old events under pressure just before retirement. If the office issues a formal decision, pay attention to the appeal period stated in it.
Late contributions and the five-year limit
Where AHV contributions were genuinely due but not paid, retrospective payment is generally possible only for the previous five years and only if the legal conditions are met. This makes early checking valuable. A missing contribution for Swiss employment in 2024 deserves prompt investigation. A gap from many years ago normally cannot be fixed with a voluntary lump-sum transfer. Most importantly, years before a later arrival in Switzerland cannot simply be bought as ordinary Swiss contribution years. Someone first joining the Swiss system at 35 cannot turn their earlier career into a complete Swiss contribution history with a single payment. If you identify a specific gap, ask the compensation office whether a contribution is payable, what amount would be due and exactly when it must be received. Do not rely only on an online calculator. For example, a person might notice in 2026 that no contribution was recorded during a break without pay in 2023. That period may fall within the time limit, but the office must decide whether and how payment is required. If a comparable gap from 2016 is only noticed in 2026, the normal payment option will generally have expired. Even then, ask whether the record contains a posting error or another period that can be taken into account. Pay only after receiving a clear assessment of your individual situation.
Family care and periods without paid work
A break to care for children, study or recover from illness does not necessarily create an AHV contribution gap. It does raise the question of who must contribute. People without gainful employment who are insured in Switzerland are generally liable for contributions. For married people, their own contributions can count as paid under the statutory conditions if the working spouse contributes at least twice the minimum amount. For 2026, the AHV information gives CHF 1,060 as this reference amount. Do not automatically apply the rule to unmarried partners: family status, income and insurance coverage must be assessed. Credits for raising children or caring for others can affect the future pension calculation, but they do not by themselves remove any contribution obligation. Review the household year by year. Who worked, at what rate, and how much was paid into AHV? Was the other adult insured in Switzerland? Are years spent caring for children reflected appropriately? Daily allowances, foreign income and pension payments can require further assessment. For example, Rui stops paid work for two years while his wife works full-time. Rather than marking a gap immediately, he asks whether her contributions meet the legal condition. A separation or a move into self-employment requires a fresh review. The exercise also highlights whether the family is adequately protected if a parent becomes disabled or dies.
Put Swiss and foreign pension rights side by side
Many people arriving in Switzerland have already earned pension rights in another state. Coordination rules apply to Portugal and other EU or EFTA countries, helping cross-border insurance histories and claims to be handled. They do not turn Portuguese contribution years into Swiss AHV contribution years on a one-for-one basis. Ask the relevant institution in each country for a personal insurance record and a benefit estimate. Record the expected start date of each pension separately. A foreign pension may be paid in a different currency and follow different rules on adjustment, taxation or survivors' benefits. Consider Maria: she worked for twelve years in Portugal, then for twenty-eight in Switzerland and expects to retire in Porto. Her plan should show a partial Swiss AHV pension, a separate Portuguese estimate and Swiss occupational pension benefits. Only after making those distinctions is it useful to convert the combined income into euros or francs. A later change of residence also calls for questions about payment and tax treatment; general online claims about 'pensions abroad' are not enough. If you have worked in several countries, list the period, institution, reference number and available documents for each. Collecting the evidence early is often more useful than a highly precise investment forecast built on incorrect assumptions about contribution years.
Request a personal forecast, not a headline maximum
The IK statement tells you what has been recorded so far. An AHV pension forecast estimates the old-age benefit you might receive under a defined set of assumptions. You can request one from a compensation office. It is far more useful in a personal financial plan than the maximum pension printed in a general table. Prepare information on your work history, family situation and intended retirement age. Ask what future income has been assumed and how retiring earlier or later changes the estimate. Then model at least three paths: continuing work as today, reducing your hours earlier and spending time abroad or out of employment. The differences show the range your plan needs to handle. A forecast is not a guaranteed pension: future wages, legislation and family circumstances can change. For example, a 42-year-old with fourteen Swiss contribution years receives a projection based on current earnings but intends to work part-time from 55. Rather than inserting the original projection unchanged, they ask about the effect of the reduction and obtain an updated occupational pension estimate. For annual old-age income, account separately for the 13th AHV payment introduced in 2026. Do not add it to disability or survivors' pensions, which continue to be paid twelve times a year.
Measure the gap against spending and assets
A partial AHV pension becomes a financial gap only when compared with future needs. Estimate spending in retirement on housing, healthcare, food, transport, travel, support for relatives, taxes and reserves for major purchases. Take your planned place of residence seriously. A household in Zurich will have different expenses after moving to Braga; currency and healthcare costs can also change. Add the expected pensions from AHV, foreign systems and occupational pensions. Do not present a one-off pension capital payment as permanent annual income without a plausible withdrawal policy and risk assumptions. For instance, if a household expects to need CHF 72,000 a year and forecasts CHF 51,000 in relatively predictable pension income, the initial annual funding gap is CHF 21,000. This is a planning figure, not a product recommendation. Assess how long existing assets could cover it and what assumptions you are making about inflation, investment returns and tax. Also model death separately: the combined pensions expected for two people do not necessarily continue at the same level for the survivor. Check statutory survivors' benefits and the pension fund's terms. The resulting plan answers a more useful question than merely asking whether the IK statement looks complete.
A practical plan for the next four weeks
Start by gathering your AHV number, arrival and departure dates, Swiss salary certificates, self-employment records, occupational pension statement and evidence of work in other countries. Request a consolidated IK statement. When it arrives, label each year plausible, unclear or missing, and note any document that could explain an unclear entry. Put precise questions to the compensation office: Why is 2021 missing? Where is the second employer's salary for 2022? Were contributions due during the family break in 2024? If there is a real gap, request written confirmation of whether a late payment is possible and the deadline. Next, request an AHV pension forecast based on transparent assumptions. Ask foreign institutions for separate statements and your Swiss pension fund for its current old-age projection. Put all the figures into one annual timeline, showing start date, currency and uncertainty. Repeat the check after a job change, divorce, a long employment break or a planned move abroad. This sequence is sounder than rushing into a pension product because you assume the maximum AHV benefit will arrive. With the documents and open questions prepared, a personal consultation can focus on your actual retirement income gap and on protection for dependants.
Frequently asked questions after moving to Switzerland
Can I buy Swiss AHV years for work I did in Portugal? Generally no. Moving later does not create a blanket option to pay for previous foreign years as Swiss contributions. Have the Portuguese rights assessed separately. Does a missing IK year prove my employer never paid? No. Check when earnings were posted and submit salary evidence to the compensation office. Does every family break cause a contribution gap? No. A working spouse's contributions may cover a married partner under the legal conditions; other situations need individual review. Does the 13th AHV payment apply if I become disabled or die? No. From 2026 it applies to old-age pensions, while disability and survivors' pensions remain payable twelve times yearly. When should I check my statement? The earlier you notice a discrepancy, the easier it is to find evidence and assess any late-payment option. Which amount should I use in a retirement budget? A personal forecast from the compensation office, supplemented by occupational and foreign pension estimates, is a better starting point. Review the assumptions periodically and keep one-off capital payments separate from recurring pensions. This makes AHV a verifiable element of your financial plan rather than a number copied from an online article.
Documents that make an advice meeting useful
An advice meeting becomes much more specific when figures are documented rather than remembered approximately. Bring the complete IK statement, a recent pension forecast, the latest occupational pension certificate and evidence of foreign insurance periods. Add recent salary certificates, pillar 3a balances and a list of years without paid work. If you are a couple, examine both histories. Mark childcare, marriage, separation, time abroad and planned changes in working hours on a timeline. State whether you intend to live in Switzerland or abroad during retirement. A credible gap analysis also needs a spending budget: housing, healthcare, everyday consumption, taxes and larger foreseeable expenses. Ask the adviser to distinguish benefits estimated by an official institution, investment returns that are merely modelled and assets already available. Every figure should have a start year and currency. If you retire in Portugal, exchange-rate movements can change purchasing power even if the amount in Swiss francs stays steady. End with a short list of unanswered questions for the AHV office, occupational pension fund and foreign pension institution. Check the ages at which the different pensions begin. If they do not start together, you may need a separate plan to finance the intervening years.
This information is general. Your documents, contracts and the relevant authorities determine what applies to your situation.