Child Investment Calculator Switzerland 2026: How It Works

This calculator shows what happens when you invest for your child from birth — and what happens when they take over and keep going. It's split into two phases because that's how investing for children actually works: Phase 1 is the 18 years where you invest for them. Phase 2 is when they take the portfolio and continue building on the foundation you created.

Every number in the milestone table corresponds to a real moment in your child's life — first day of school, the Lehre or Gymnasium decision at 16, turning 18 and becoming a legal adult, university at 20, the first apartment deposit at 25, and building a life at 30–40. These aren't abstract projections. They're the moments where Swiss families feel financial pressure — and the calculator shows that CHF 50/month started at birth makes all of them manageable.

The Mathematics Behind the Calculator

The calculator uses the standard compound interest formula with monthly contributions (Dollar-Cost Averaging). It assumes monthly compounding at the selected annual return rate. The default 7% reflects the long-term historical average of global equity markets (MSCI World) over 30+ years. Capital gains on private investments are tax-free in Switzerland — one of the most significant structural advantages for Swiss investors and a key reason why investing for children is particularly powerful here.

What CHF 50, 100, 200 or 500/Month Becomes Over 18 Years

At 7% average annual return. Capital gains tax-free in Switzerland. These are projections, not guarantees — actual returns will vary.

The Savings Account Mistake: CHF 22,000 Lost on CHF 100/Month

The most common mistake Swiss parents make: putting their children's savings on a bank savings account earning 0.75–1.25%. Over 18 years, the difference between a savings account and an invested portfolio is dramatic:

Same monthly amount. Same 18 years. CHF 22,400 difference. The savings account doesn't just underperform — after inflation (~1.5%/year), it actually loses purchasing power. The invested portfolio grows in real terms. This is the most expensive financial decision most Swiss parents make without realising it.

Phase 2: What Happens When Your Child Continues Investing

This is where the numbers become extraordinary. If you invest CHF 100/month from birth to 18 (building ~CHF 46,000), and your child then continues investing CHF 200/month from 18 to 40 at 7%, the portfolio grows to over CHF 300,000. That's enough for a property deposit anywhere in Switzerland — funded by a combination of your early start and their continued discipline.

The Phase 2 feature of our calculator is unique. No other Swiss children's investment calculator shows what happens after 18. But that's exactly the point: the gift you're giving your child isn't just money. It's a 22-year head start on compound interest that most adults don't get until their 30s.

The Cost of Waiting: Every Year Costs Thousands

The calculator's "Cost of Waiting" section shows the most important insight: starting early matters more than investing large amounts later. At CHF 100/month and 7% return:

Starting at birth vs. age 5 creates a CHF 33,000 gap at age 25 — and this gap can never be closed. The 5 years of compounding you miss can't be bought back at any price. That's why the best day to start is always today.

For Grandparents and Godparents: What Every Gift Becomes

Our gift calculator shows what a one-time investment becomes at every milestone. A CHF 10,000 lump sum invested at birth at 7% return:

CHF 10,000 becomes CHF 55,000. No monthly contributions needed — just one lump sum and 25 years of patience. This is why a Taufgeschenk invested is worth more than a Goldvreneli — the gold coin barely keeps up with inflation, while the investment grows 5.5x.

Tax Treatment: What Parents Need to Know

Capital gains: Tax-free. The biggest advantage. All growth in the portfolio — whether CHF 12,000 or CHF 120,000 — is completely untaxed in Switzerland. This is Switzerland's structural advantage and the reason investing for children is particularly powerful here.

Dividends: Declared as income in the parents' tax return until age 18. On a CHF 30,000 portfolio with ~1% dividend yield: CHF 300/year to declare. Swiss withholding tax (35%) is reclaimable.

Wealth tax: Portfolio value included in parents' taxable wealth. At 0.3% wealth tax on CHF 50,000: CHF 150/year. Negligible compared to the growth.

Gift tax: Exempt between parents and children, and between grandparents and grandchildren, in most cantons. Godparents: check cantonal rules (typically not an issue for amounts under CHF 5,000/year).

→ Complete tax and legal guide: Investing for Children in Switzerland

Quality Investing vs. ETFs for Children

With an 18-year horizon, the difference between a passive ETF and an actively managed quality portfolio compounds significantly. Quality companies — Visa, LVMH, Microsoft, L'Oréal — have historically outperformed broad indices over long periods due to pricing power, recurring revenue, and growing dividends.

With arvy, you invest in ~30 quality companies, hand-picked by three CFA Charterholders who invest their own money (CHF 100,000+) alongside yours. You also receive a weekly analysis of one quality company — building the financial education that you'll eventually share with your child.

→ Children's Account Comparison Switzerland 2026: arvy vs. findependent vs. True Wealth vs. UBS