Free Swiss calculators & tools

Simple, reliable tools for your financial decisions in Switzerland: real estate, salary, cross-border workers, and soon more.

Our calculators

Pick a tool to get started.

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Mortgage affordability

How much can you borrow to buy property in Switzerland? Maximum budget and monthly costs.

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💰

Income needed to buy

What salary is needed for a given property? Also check whether your equity is enough.

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Cross-border net salary

Your net salary by canton of work: social deductions and withholding tax.

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Tax comparison by municipality

Where do you pay the least tax? Compare 2110 municipalities and 26 cantons based on your salary.

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🔋

Electric vs petrol car

Compare the running cost of an electric and a combustion car.

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Pillar 3a: tax savings

How much your 3a contribution saves you in taxes, yearly and until retirement.

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Car leasing

Monthly payment and real total cost of a car lease (interest included).

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💱

CHF ⇄ EUR converter

Convert francs to euros (today's rate). Handy for cross-border workers.

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⚡

Electricity cost & price

Price by municipality (2,123) + your annual and monthly bill.

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👶

Family allowances by canton

How much do you receive per child by canton? Official 2026 amounts and a ranking of all 26 cantons.

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Latest from the blog

Sourced, number-driven guides on tax, property, cross-border work and energy in Switzerland.

Energy · 21 August 2026

Electricity prices in Switzerland 2026: where the kilowatt-hour costs least

From 9.64 to 43.61 ct/kWh by municipality: ranking of the 26 cantons, top 10 municipalities, and the levers that remain.

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Cross-border · 5 August 2026

The 1983 agreement: taxed in Switzerland in Geneva, in France in canton Vaud

The 8 cantons of the agreement, the Geneva exception, the 4.5 % and 3.5 % compensation and the real net gap.

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Cross-border · 15 July 2026

Withholding tax in Geneva: understand your scale and recover the excess

Scales A, B, C, H, the annual model, quasi-residence: what the scale ignores and the step to take before 31 March.

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Property · 24 June 2026

Notary fees in Switzerland: the real cost of buying, canton by canton

From 0.3 % to 4.1 % of the price by canton: the table of all 26 cantons, the forgotten mortgage charge and the cash trap.

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All blog articles →

About Helvon

Helvon gathers practical calculators and tools designed for Switzerland. Every tool is free, no sign-up, and runs directly in your browser — your data never leaves your device.

Our goal: to help you make informed financial decisions, simply. New tools are added regularly.

How these calculators are built

Helvon brings together nine calculators for the financial decisions people make in Switzerland: buying a home, comparing tax from one municipality to the next, estimating cross-border net salary, knowing what a kilowatt-hour or a lease really costs. Each rests on an official public source — ElCom for electricity, the Federal Tax Administration API for taxes, banking guidelines for mortgages, the Federal Social Insurance Office for contributions and pillar 3a.

Three principles apply to every tool. The formulas are shown: each page explains its calculation, its parameters and its limits, so you can redo it by hand. The parameters are editable: if your bank uses a 4.5 % theoretical rate instead of 5 %, enter it. The data year is stated: electricity tariffs, tax scales and pension ceilings change every year, and a page that does not say which year it is talking about is worthless.

There is no registration, no collection of personal data, and no affiliate link to banks or insurers. The results are estimates meant to prepare a decision, not to replace it. Who writes, from which sources and how often the data is updated is all set out on the about page.