There is one financial asset that no adult can buy no matter how much money they have: time. When you invest for a newborn, you are gifting them four or five decades of compound interest working silently in the background. That is, arguably, the most valuable gift parents can give without it costing a fortune.

This chapter is not about setting up a millionaire’s trust fund. It is about what any family with an ordinary income can achieve by starting early and staying consistent.

The magic of time

Compound interest has a counter-intuitive property: the earliest years appear negligible, yet they do all the heavy lifting. A contribution of €50 per month from birth, earning an average 7% annual return, grows to roughly €85,000 by the time the child turns 30. Of that total, you will have contributed only €18,000 from your own pocket. The rest is accumulated returns.

If you wait until the child is 18 and then contribute €200 per month — four times as much — by age 30 they will have accumulated around €40,000. Half the result, despite putting in more than double each month. That is the difference early action makes.

The lesson is plain: in investing, when matters more than how much. And for your children, the optimal when is today.

How much to contribute

There is no magic number, but there is a useful principle: whatever you can sustain without interruption for 15–20 years. It is better to contribute €30 per month for 18 years than to contribute €200 for six months and then stop.

Some rough guidelines by household income:

  • Tight budget: €25–50 per month. It seems tiny, but after 18 years with compound returns it exceeds €15,000.
  • Average income: €50–150 per month. Enough to build a meaningful cushion for university or a first project.
  • Comfortable income: €150–300 per month. Opens up bigger goals: a deposit on a flat, seed capital for a business.

The critical factor is not the initial figure but consistency. Automate the transfer for the day after payday and forget about it.

Investment vehicles for minors

The practical challenge is that a minor cannot hold a standard investment account in most countries. The most common options:

Investment in the parents’ name with a “mental label”: You open an index-fund account in your own name but mentally earmark it as “the child’s account.” Simplest and most flexible. Downside: it is taxed as yours, and if you face debt issues it is not ring-fenced.

Custodial account or junior account: Some countries and institutions allow accounts in the child’s name with an adult as custodian. The capital passes to the child on reaching majority. Advantage: asset separation. Disadvantage: you lose control at 18.

Child savings insurance: Insurance products with an investment component. They tend to be conservative with high fees. In general, a low-cost index fund will outperform them over the long term.

Education savings plans (where available): Some countries offer tax advantages for education savings (529 in the US, Junior ISA in the UK). If your country offers one, use it.

The most efficient option for most people: a low-cost global index fund in the parents’ name with automatic monthly contributions.

Financial education by stage

Investing for your children is only half the equation. The other half is preparing them to manage that money on the day it becomes theirs. Without financial education, inherited capital evaporates within a few years.

Ages 3–6: The physical piggy bank. The concept that money accumulates, that you must choose between spending it now or saving it for something better. Games with real coins.

Ages 7–11: A weekly allowance with three envelopes: spend, save, give. Begin talking about prices, about comparing, about things costing effort. Let them make small mistakes with their own money.

Ages 12–15: Introduce the concept of investing. Show them historical market charts. Explain what a fund is. Let them “invest” a token amount symbolically and track it together each month.

Ages 16–18: Full transparency. Show them the account you have been building for them. Explain how much you contributed, how much it grew, and why. Discuss plans: studies, housing, entrepreneurship. Give them a voice in deciding what to do with that capital when it is theirs.

The goal is not to create professional investors but adults who understand that money is a tool that can be grown with patience.

Common parenting mistakes

Waiting until you have “enough”: The best time to start was yesterday. The second-best time is today with whatever you have.

Investing in complex or fashionable products: For a minor, a global index fund is sufficient. You do not need crypto, individual stocks or structured products.

Not telling them anything until they turn 18: If on their birthday you hand over €50,000 with no context or prior education, the risk of impulsive spending is high.

Using the child’s money as your own emergency fund: Once you designate that money as your child’s, respect the boundary. If you need an emergency fund, build a separate one.

Stopping contributions during crises: Market downturns are precisely when contributions buy more units at a lower price. Maintaining automatic contributions during bad times is what separates consistent investors from emotional ones.

Investing for your children does not require wealth. It requires starting and not stopping. With €50 per month and 18 years of discipline, you are giving them an advantage that no university degree can match: capital and financial knowledge from a young age.

Important disclaimer: Investing involves risks, including the possible loss of your invested capital. This article is for educational purposes only and does not constitute investment advice. Before making any financial decision, educate yourself properly and, if needed, consult a qualified professional.