Compound interest & savings
Calculate how an initial CHF investment and monthly contributions grow over time with monthly compounding.
Direct answer
With monthly compounding, a CHF 10,000 starting balance plus CHF 500 per month at a 4.0% annual return grows to CHF 198,125 over 20 years (CHF 130,000 contributed plus CHF 68,125 compound growth).
Key statutory figures & facts
- •Compounds monthly: monthly rate = annual rate ÷ 12
- •Separates your cash contributions from compound growth
- •Works for Pillar 3a equity funds, ETF savings plans and cash accounts
- •Supports 1 to 80 year horizons
How it's calculated
- Monthly rate = annual rate ÷ 12.
- Each month: balance × (1 + monthly rate) + monthly saving.
Assumptions
- The return is constant and an assumption, not a forecast.
- No wealth tax, custody fees or inflation deducted.
Frequently asked questions
- Are capital gains on private ETF and stock investments taxed in Switzerland?
- For private investors (Privatvermögen) who are not classified as professional securities dealers, capital gains on stocks and ETFs are tax-free in Switzerland, while dividends and interest are taxed as ordinary income and subject to 35% reclaimable Swiss withholding tax (Verrechnungssteuer).
- Is the return guaranteed?
- No. You choose the rate; real market returns fluctuate.