Opening a junior depot UCITS Europe account — a custody account to invest in ETFs for your child — is one of the highest-leverage financial moves a European parent can make. The combination of decades-long time horizons and compound growth means even modest contributions to a child’s UCITS account can grow into a life-changing sum by adulthood. But the rules, tax treatment, and account types vary significantly across EU countries. This guide covers the country-by-country reality for 2026.
The maths here is genuinely powerful. A child’s account has 18+ years of compounding before they even reach adulthood, and potentially 50+ years before retirement. Starting a UCITS position at birth gives compound growth the longest possible runway — the single biggest factor in long-term wealth.
Why a child’s UCITS account is so powerful
The case rests entirely on time. Money invested for a newborn has 18 years to compound before adulthood and decades more before retirement:
- €100/month from birth to 18 at 7% annual growth becomes roughly €43,000 by adulthood — from €21,600 of contributions.
- If left untouched to age 60, that same account (no further contributions) could exceed €650,000 — the magic of a 60-year compounding horizon.
- A single €5,000 lump sum at birth, left untouched, can exceed €290,000 by age 60 at 7%.
This is why starting early matters more than starting large. The compound growth calculator shows exactly how a child’s account grows over these long horizons — the numbers are genuinely striking when you extend the timeline to retirement age.
What makes a child’s account categorically different from your own is the second layer of compounding: the gains earned in the first decade themselves earn returns for another five decades. An adult opening an account at 40 has perhaps 25 years of runway; a newborn has the better part of a century. That gap is not linear — it is exponential, and it is the entire reason this article exists.
How a minor’s investment account actually works
Across Europe, child investment accounts generally fall into two types:
- Custodial accounts in the child’s name (junior depot): the assets legally belong to the child, managed by parents until majority. Often tax-advantaged using the child’s own (low or zero) tax allowance. The child gains control at 18.
- Parent-held accounts earmarked for the child: the assets remain legally the parent’s, simply intended for the child. More control retained, but taxed at the parent’s rate and counted as the parent’s wealth.
The custodial structure is usually more tax-efficient (using the child’s allowance) but means the child legally controls the money at 18 — a consideration if you’re concerned about an 18-year-old accessing a large sum. The parent-held structure keeps control but loses the tax advantage. The children’s custody accounts guide covers the mechanics in more detail.
Who legally owns and controls the money
This is the point most parents misunderstand, so it is worth being blunt. In a genuine junior depot, the moment money enters the account it belongs to the child — not to you, not to the household, to the child. You are the custodian: you place trades, you choose the funds, you sign the paperwork, but you are administering someone else’s property. Legally, you cannot withdraw the money for your own purposes, and in most jurisdictions you cannot even use it for expenses that are your own parental obligation to cover. At the age of majority — 18 in nearly every European country — that custodianship simply ends, and the now-adult child can do whatever they wish with the full balance. Understanding this distinction up front prevents an unpleasant surprise eighteen years later.
The key tax advantage: the child’s own allowance
The reason a junior depot is more than a sentimental gesture is tax. In almost every European system, a child is a separate taxpayer with their own allowances and exemptions — and those allowances usually sit largely unused, because most children have no salary, no rental income and no other investments competing for the same thresholds. Routing your family’s long-term equity growth through the child’s tax identity can therefore shelter gains that, in your own name, would be taxed in full.
The practical effect is that modest annual gains in a junior depot can be entirely or almost entirely tax-free, year after year, because they fall within the child’s untouched capital-gains exemption or basic income-tax allowance. Over an 18-year accumulation phase, that compounding of un-taxed growth quietly adds up to a meaningful slice of the final balance. The mechanics differ by country, and you should always verify with your national tax authority, but the principle is consistent across the continent.
Country-by-country reality
Germany
Germany’s Junior-Depot is well-established. Assets in the child’s name use the child’s own Sparerpauschbetrag (€1,000 capital gains allowance) plus the basic income-tax allowance, making modest gains effectively tax-free. Brokers like Trade Republic and Scalable offer junior accounts. The child controls the account at 18.
France
France allows a PEA Jeunes (for 18-25 year olds) and standard custody accounts for minors held by parents. The compte-titres for a minor is straightforward, though the full PEA tax benefits apply once the child is 18+. See the France PEA guide for the wrapper details.
Netherlands, Spain, Italy
Each allows custody accounts for minors with parent management. The tax treatment follows the country’s general UCITS rules — Box 3 in the Netherlands (with the child’s own allowance), progressive CGT in Spain, 26% in Italy. The child’s separate tax allowance can shelter modest gains.
Lithuania and CEE
Lithuania and neighbouring CEE countries allow parent-managed custody accounts. The child’s own €500 capital gains exemption (in Lithuania) applies, and the 15% flat rate is favourable. As a Lithuanian parent myself, the combination of low tax and the child’s separate allowance makes this attractive. See the Lithuania tax guide.
How the setup compares across countries
The table below summarises the custody-account angle in six markets. The figures are illustrative and simplified — thresholds change, and you should always verify with your national tax authority before acting.
| Country | Account type for a minor | Child’s own allowance (illustrative) | Control at majority |
|---|---|---|---|
| Germany | Junior-Depot in child’s name | €1,000 Sparerpauschbetrag + basic allowance | Child, at 18 |
| France | Compte-titres for minor; PEA Jeunes at 18+ | General CGT rules; PEA wrapper from 18 | Child, at 18 |
| Italy | Parent-managed custody account | 26% flat CGT; child’s separate position | Child, at 18 |
| Spain | Parent-managed custody account | Progressive CGT; child’s separate allowance | Child, at 18 |
| Netherlands | Custody account, parent-managed | Box 3 with child’s own allowance | Child, at 18 |
| Lithuania | Parent-managed custody account | €500 CGT exemption; 15% flat rate | Child, at 18 |
Gifting tax: the contribution you may not have considered
Because money placed into a junior depot legally becomes the child’s, each contribution is, technically, a gift. In most European systems this is a non-issue for the sums families actually contribute, because parent-to-child gift allowances are generous and frequently reset over multi-year windows. Germany, for example, allows substantial tax-free gifts from each parent to each child across a rolling period; Lithuania and several CEE neighbours treat gifts between close family as effectively exempt within ordinary limits.
The point at which gifting tax becomes relevant is a large lump sum — funding an account with a six-figure inheritance pass-through, say, rather than €100 a month. If you plan to seed an account heavily, it is worth checking the lifetime gift threshold in your country first; modest, regular contributions almost never trip it. As always, verify with your national tax authority, since the allowances and reset periods are exactly the sort of detail that shifts between budgets.
A worked compounding example
Consider the most ordinary case imaginable: €100 a month, from the day a child is born, into a single global equity UCITS, with no heroics and no market timing. At an assumed 7% annual return — illustrative, not a promise — here is roughly how the runway unfolds:
| Milestone | Contributed so far | Illustrative balance at 7% |
|---|---|---|
| Age 10 | €12,000 | ~€17,000 |
| Age 18 (contributions stop) | €21,600 | ~€43,000 |
| Age 40 (left untouched) | €21,600 | ~€190,000 |
| Age 60 (left untouched) | €21,600 | ~€650,000+ |
The striking line is the third and fourth: after age 18 not a single euro more goes in, yet the balance multiplies more than tenfold. That is compounding finishing the job you started. The lesson I keep coming back to is that the contributions are almost a footnote — the decades are doing the heavy lifting. You can recreate this projection for your own monthly figure with the financial freedom calculator to see what a sustained runway means for your child specifically.
What I did for my own children
When my first child was born I spent an embarrassing amount of time researching the “optimal” structure before realising the optimal structure was the one I would actually keep funding. I opened a junior depot in the child’s name, set a standing order of a fixed amount on payday, and chose one accumulating global equity UCITS. No bonds, no tinkering, no second fund. In the years since, the single most valuable thing I did was automate the contribution so it left the account before I could rationalise spending it elsewhere — the behavioural trick matters more than the fund selection. The guide to automating wealth-building with ETF savings plans covers how I set that up, and it is the one step I would not skip.
What to hold in a child’s account
Given the multi-decade horizon, a child’s account is the ideal place for maximum-growth, low-cost global equity:
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- A single global equity UCITS (VWCE, IWDA) — maximum diversification and growth for the long horizon. No need for bonds in an account with 18-60 years to run.
- Accumulating share class — to defer any dividend tax and maximize compounding (subject to your country’s rules).
- The lowest possible TER — over 60 years, even small fee differences compound enormously. The ETF fee (TER) cost calculator shows the long-term cost.
The simplicity is the point: one global equity UCITS, set up automatic monthly contributions, and let compounding do the work for 18+ years. The European ETF beginner roadmap covers fund selection in detail. The choice of an accumulating share class is deliberate and worth understanding properly — for the reasoning on tax deferral inside a child’s account, the accumulating versus distributing ETFs comparison sets out exactly why reinvesting share classes suit a long, untouched runway. The broader tax mechanics that make this so effective are in the ETF tax efficiency guide.
Common mistakes
- Treating the account as your own savings. The money is the child’s. Withdrawing it for household expenses can breach the custodial duty and, in some systems, undo the tax benefit you opened the account to capture.
- Funding it as one large lump sum without checking gift rules. Regular small contributions rarely trouble gift-tax thresholds; a six-figure seed deposit might. Check before you fund heavily.
- Holding too conservatively. A 0-to-18 horizon, let alone 0-to-60, has no business holding bonds. Caution here quietly forfeits the very compounding you came for.
- Ignoring the age-18 handover. A large balance handed to an 18-year-old with no financial grounding is a real risk. If that worries you, weigh the parent-held structure or plan the conversation early.
- Chasing the perfect fund instead of starting. A month spent deliberating is a month of runway lost. One sensible low-cost UCITS, started now, beats the ideal one started next year.
Five principles for a child’s UCITS account
- Start as early as possible — the time horizon is the entire advantage. Birth is ideal.
- Use the child’s tax allowance — a custodial account in the child’s name shelters gains using their separate (low) allowance.
- Hold 100% global equity — the long horizon makes bonds unnecessary; maximize growth.
- Pick the lowest-TER UCITS — over 60 years, fee differences compound into large sums.
- Consider the age-18 control issue — custodial accounts pass control to the child at majority; plan accordingly.
Key takeaways
- Time is the whole edge. An 18-to-60-year runway lets compounding do work no contribution size can match.
- The child usually has their own tax allowance. Held in the child’s name, modest gains can be effectively tax-free — verify with your national tax authority.
- The money belongs to the child, with you as custodian until 18. Plan for the handover rather than being surprised by it.
- Gifting tax rarely bites for regular contributions but can apply to large lump sums — check your country’s thresholds first.
- Keep it simple and automate. One low-cost global equity UCITS plus a standing order beats clever complexity every time.
FAQ
Q: Does the money legally belong to my child?
A: In a custodial (junior depot) account, yes — the assets are the child’s, managed by you until they turn 18, when they gain control. In a parent-held account earmarked for the child, the assets remain legally yours.
Q: What happens at age 18?
A: In a custodial account, the child gains full legal control. If you’re concerned about an 18-year-old accessing a large sum, consider a parent-held account (less tax-efficient but more control).
Q: Which UCITS should I hold for a child?
A: A single low-cost global equity UCITS (VWCE, IWDA), accumulating share class. The multi-decade horizon makes 100% equity appropriate — no bonds needed.
Q: Are the gains tax-free?
A: Often largely so, when held in the child’s name using their separate tax allowance. The exact treatment depends on your country and the account size.
Q: How much should I contribute?
A: Whatever is sustainable — even €50-€100/month from birth grows substantially. Consistency over decades matters more than the amount.
Q: Do I owe gift tax when I pay money into the account?
A: For ordinary monthly contributions, almost never — parent-to-child gift allowances are generous in most European systems. A large one-off seed deposit can be different, so check the lifetime gift threshold in your country before funding heavily.
Q: Can I take the money back out if I need it?
A: Not for your own purposes. In a genuine junior depot the assets are legally the child’s, and using them for your own benefit can breach the custodial duty and jeopardise the tax treatment. Only a parent-held account leaves you free to access the funds.
Q: Is a junior depot better than just investing in my own name and giving it later?
A: The junior depot’s advantage is the child’s separate tax allowance, which can shelter gains your own account would have taxed in full. The trade-off is losing control at 18. Which wins depends on the sums involved and your country’s rules.
Q: What if we move to another EU country before the child turns 18?
A: The account’s tax treatment generally follows your tax residence, so a move can change the rules that apply. The UCITS holding itself travels fine; the wrapper and allowances may not. Verify with your national tax authority in the new country.
Q: Can grandparents contribute too?
A: Yes, and it is common. Grandparent-to-grandchild gifts have their own allowances, often separate from the parents’, which can increase the total that flows in tax-free. The same gift-threshold checks apply.
The bottom line
For a European parent in 2026: opening a UCITS custody account for your child is one of the highest-leverage financial moves available, because the 18-60 year time horizon gives compounding its longest possible runway. Use a custodial (junior depot) account in the child’s name to leverage their separate tax allowance, hold a single low-cost global equity UCITS at 100%, and start as early as possible — birth is ideal. The exact account type and tax treatment vary by country, but the principle is universal: time is the advantage. The long-term return projector shows the striking long-horizon numbers, and the merging-portfolios-on-marriage guide covers the next family-finance life event.
Cited sources: European Commission family law, OECD tax database, and Eurostat household data. Educational content — verify your country’s specific rules.
Model your own net: run the numbers for your jurisdiction in the free EU dividend tax calculator before you set an income target.
European UCITS/ETF investor with 11+ years building a global dividend and index portfolio, and founder of Financial Expert Class. I write every guide here from first-hand experience investing across EU brokers and tax regimes — not theory. More about me →