Swiss Mortgage Affordability Calculator (2026)
Test Swiss home buying affordability under FINMA rules: 5% imputed interest rate, 1% maintenance, 15-year 2nd mortgage amortization, and 33% gross income limit.
Switzerland Calculator
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Move the sliders or type exact numbers. Results update instantly.
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Estimated Max Property Price
CHF 1'250'000
Based on your selected mortgage affordability calculator assumptions. Try different sliders to compare scenarios.
Estimated Max Mortgage
CHF 1'000'000
Required Equity at 20%
CHF 250'000
These calculations are financial projections and planning estimates, not tax, legal or licensed financial advice. Swiss federal, cantonal and municipal tax laws vary by canton.
Swiss Mortgage Affordability & Minimum Income Matrix
Swiss banks (UBS, Raiffeisen, Cantonal Banks) do not qualify borrowers using current mortgage rates (~1.5%–2.5%). Instead, FINMA mandates a stress test using a 5% theoretical interest rate, 1% maintenance, and 15-year 2nd mortgage amortization. Total theoretical carrying costs cannot exceed 33.3% of household income.
| Property Price | 20% Down Payment | 80% Mortgage | FINMA Annual Cost | Min. Gross Income |
|---|---|---|---|---|
| CHF 800,000 | CHF 160,000 | CHF 640,000 | CHF 47,111 / yr | CHF 141,333 |
| CHF 1,000,000 | CHF 200,000 | CHF 800,000 | CHF 58,889 / yr | CHF 176,667 |
| CHF 1,250,000 | CHF 250,000 | CHF 1,000,000 | CHF 73,611 / yr | CHF 220,833 |
| CHF 1,500,000 | CHF 300,000 | CHF 1,200,000 | CHF 88,333 / yr | CHF 265,000 |
| CHF 2,000,000 | CHF 400,000 | CHF 1,600,000 | CHF 117,778 / yr | CHF 353,333 |
The Strict 10% Hard Cash Equity Rule
While 20% down payment is required, at least 10% of the purchase price must consist of genuine personal cash, liquid securities, or Pillar 3a balances. Only the remaining 10% can be sourced by early withdrawal or pledging of your 2nd Pillar pension fund (BVG/LPP).
Direct vs Indirect Amortization
In Switzerland, indirect amortization via Pillar 3a is standard: you pay your required mortgage amortization into a pledged Pillar 3a account, retaining full mortgage interest tax deductions and cantonal wealth tax deductions while growing retirement capital.
How to Use the Mortgage Affordability Calculator
Enter household gross income
Input total annual gross income for all borrowers on the mortgage application.
Input available equity
Enter your savings, investments, and Pillar 3a funds available for the required 20% down payment.
Apply FINMA stress-test rate
Lenders apply a standard 5.0% theoretical interest rate, 1% maintenance, and 15-year amortization.
Verify the 33% affordability rule
Ensure total theoretical carrying costs do not exceed 33.3% of your gross annual income.
Formula & Calculation Methodology
Affordability = (5% Imputed Interest + 1% Maintenance + Amortization) ≤ 33.3% Gross IncomeThis calculator uses standard Switzerland financial formulas, IRS thresholds, and amortization schedules. All results compute instantly in your browser with zero data stored or transmitted.
Calculation Examples & Scenarios
CHF 1,200,000 Home in Canton Zurich (20% Equity)
CHF 1,200,000 property price, CHF 240,000 down payment (CHF 120k hard cash + CHF 120k Pillar 3a), CHF 960,000 mortgage.
CHF 850,000 Single Family Home (25% Equity)
CHF 850,000 price, CHF 212,500 down payment, CHF 637,500 mortgage.
High-Income Household (CHF 250,000 Gross Income)
CHF 250,000 annual income, CHF 350,000 available cash equity.
Key Benefits
- Applies official FINMA stress-test criteria used by UBS, Raiffeisen, and cantonal banks (ZKB, BCV)
- Separates non-amortized 1st mortgage (up to 66.7%) from mandatory 15-year 2nd mortgage amortization
- Enforces the Swiss 10% hard cash equity rule to ensure mortgage pre-approval readiness
Common Use Cases
- Prospective buyers determining their maximum realistic property budget before scheduling viewings
- Homeowners evaluating whether they qualify to refinance or increase mortgage borrowing
- Couples assessing whether pledging Pillar 2 vs Pillar 3a satisfies equity requirements
The FINMA 33% Mortgage Affordability Rule Explained
Swiss financial market regulations (FINMA) require banks to stress-test residential mortgage affordability using conservative statutory parameters. Total theoretical carrying costs—calculated as 5.0% imputed interest on the loan, 1.0% of property value for maintenance and utilities, and mandatory amortization of the 2nd mortgage—must not exceed 33.3% (one-third) of gross annual household income.
Even though current mortgage rates may be 1.5% to 2.5%, banks will reject loan applications if the theoretical cost exceeds the 33.3% threshold at the 5.0% stress rate.
The Swiss 20% Down Payment and 10% Hard Cash Rule
Swiss lenders require buyers to supply at least 20% of the property purchase price in personal equity. By law, at least 10% must consist of "genuine" hard cash equity—such as personal savings, investment securities, or Pillar 3a retirement funds.
The remaining 10% may be sourced from 2nd pillar pension fund assets (either via early withdrawal or by pledging pension assets without incurring immediate capital taxes).
Frequently Asked Questions
Swiss financial supervisory rules (FINMA) dictate that the total theoretical carrying costs of a home—calculated with a 5% stress interest rate, 1% property maintenance/ancillary costs, and mandatory amortization—must not exceed 33.3% (one-third) of gross annual household income.
Swiss banks apply a 5.0% theoretical calculation rate as a stress test to ensure borrowers can comfortably afford their mortgage payments even if interest rates surge over a 10- or 20-year horizon.
A minimum 20% equity down payment is required by law. Crucially, at least 10% must consist of "hard" cash equity (savings, investments, or Pillar 3a funds); only the remaining 10% can be sourced from 2nd pillar pension fund pledges.
The 1st mortgage covers up to 66.7% (two-thirds) of property value and has no legal requirement to be amortized. The 2nd mortgage covers the tranche from 66.7% up to 80% and must be fully paid off within 15 years or by age 65.
Eigenmietwert is a fictional rental income added to your taxable income for living in your own home. However, you can deduct 100% of mortgage interest payments and maintenance expenses, substantially offsetting this liability.
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Related Switzerland Guides
Swiss Mortgage Affordability Guide
Understand Swiss mortgage affordability, equity requirements and lender stress-test assumptions.
Swiss Mortgage Income Stress Test
Use affordability interest assumptions to test mortgage capacity before buying.
Swiss Home Equity Requirement Guide
Swiss home equity requirements guide: understand the mandatory 20% down payment rule, hard equity rules, Pillar 2/3a pension withdrawals, and affordability.