There are three routes to investing in index funds in Spain: a robo-advisor that manages the portfolio for you, a broker with an automatic ETF savings plan, or buying the funds yourself. What changes is the cost, the effort and the tax.
Figures checked on 21 September 2026 · May contain affiliate links
The idea in three lines
An index fund tracks a stock market index — the MSCI World, the S&P 500 — by buying the same companies in the same proportions. No manager is picking stocks, which is why it costs a fraction of what an actively managed fund charges.
The return you get is the index return minus costs. That subtraction is the key: over the long run, half a point of fees a year eats a very visible part of the result, and it is the only thing you know in advance.
An ETF is the same thing in a different wrapper: an index fund that trades on an exchange and is bought like a share. In Spain the important difference is not about investing but about tax, and it is explained further down.
All three end up investing in indices. What changes is who does the work, what it costs and what happens with the tax office when you move the money.
You answer a risk questionnaire and an automated manager builds a portfolio of index funds, invests your contributions and rebalances it when it drifts.
For those who want to invest well without spending time on it.
You pick one or several index ETFs and schedule a recurring purchase. The broker executes it every month, often with no purchase fee.
For those who want the lowest cost and know which index to buy.
You open an account with a fund platform and subscribe directly to index funds from managers such as Vanguard, Fidelity, Amundi or iShares.
For those who enjoy running their own portfolio and want to keep the transfer advantage.
Figures taken from each provider’s website on 21 September 2026. No scores and no ranking: the order is alphabetical, and which one suits you depends on your situation.
Automated managers supervised in Spain. They invest in index funds that can be transferred tax-free. Custody and the cost of the funds themselves come on top of the management fee: always compare the total cost.
| Provider | Minimum investment | Published costs | What it invests in | Tax-free transfers | Supervision and protection | |
|---|---|---|---|---|---|---|
| Finizens | €1,000 | Management fee from 0.41% (up to €20,000) down to 0.14%, with a loyalty reduction. Published total cost of the investment plan: 0.29–0.62% | Index funds (investment plan) | Yes | CNMV (no. 267) · FOGAIN | Visit site |
| inbestMe | €1,000 in index fund portfolios | Management 0.41% + custody 0.11% up to €100,000. The cost of the funds (0.13–0.18%) is separate | Index funds; ETF portfolios too | Yes in fund portfolios; no in ETF portfolios | CNMV (no. 272) · FOGAIN | Visit site |
| Indexa Capital | €1,000 | Management fee from 0.52% to 0.35% up to €500,000 (0.38% between €10,000 and €100,000). Published average total cost: 0.53% | Index funds | Yes | CNMV · FOGAIN | Visit site |
| MyInvestor | €150 | Management 0.15% + custody 0.15%. Published total cost, funds included: 0.40–0.43% | Index funds | Yes | Andbank group · manager registered with the CNMV (no. 237) | Visit site |
They run recurring purchases of index ETFs with no purchase fee. These are ETFs, not funds: there are no tax-free transfers. Two of them also offer CFDs, a leveraged product that has nothing to do with indexing.
| Provider | Plan from | Plan fee | Currency conversion | Supervision and protection | Offers CFDs? | |
|---|---|---|---|---|---|---|
| Scalable Capital | €1 | €0 | Not applicable: ETFs settle in euros | BaFin (Germany) · securities up to €20,000, cash up to €100,000 | No | Visit site |
| Trade Republic | €1 | €0 | Not applicable to euro-denominated ETFs | BaFin (Germany), with a branch and IBAN in Spain · cash up to €100,000 | No | Visit site |
| Trading 212 | €1 | €0 | 0.15% | CySEC (Cyprus) · compensation fund up to €20,000 | Yes, in a separate account | Visit site |
| XTB | €15 | 0% up to €100,000 a month; then 0.2% (min. €10) | 0.5% | CNMV (branch no. 40) and KNF (Poland) · up to €22,000 | Yes: 77% of retail accounts lose money with CFDs | Visit site |
Summarised terms, subject to change; management fees include VAT where the provider publishes them that way. Check the current ones on each website before signing up. Last reviewed: 21 September 2026.
* Link with a commercial relationship (affiliate or refer-a-friend). The rest are ordinary links.
How much does half a point of fees weigh over 10, 20 or 30 years? The simulator compares two scenarios with your figures.
Simulator and comparisonThe chart follows an ETF that tracks the MSCI World: more than 1,300 companies from 23 developed countries. Look at it in weeks and years, not days: there are sharp falls, and there is also a direction.
TradingView chart for information purposes. Past performance does not guarantee future results.
Calculate with compound interestAnyone investing in indices with regular contributions buys the same in fear as in euphoria: that is the whole point. Read the gauge as context, not as a signal to get in or out.
Source: CNN Business Fear & Greed Index. Updated once a day at 22:30 CET, Monday to Friday, after the US market close — when the day’s reading is final.
See today’s marketIf the market goes up, you are happy because your wealth grows. If the market goes down, you are happy because you buy cheaper.
In Spain, index funds and ETFs invest in the same thing but are not taxed the same way. It is what most separates a robo-advisor from an automatic ETF plan, and worth understanding before you choose.
If you redeem a fund and reinvest in another through a transfer, no gain or loss is recognised: the new units keep the original value and purchase date. You pay when you take the money out, not when you move it.
The law excludes exchange-traded funds from that regime, including those listed on foreign exchanges. Every ETF sale is taxed even if you reinvest immediately, so rebalancing an ETF portfolio has a tax cost.
The gain goes into the savings base of Spanish income tax. Current scale: 19% up to €6,000, 21% up to €50,000, 23% up to €200,000, 27% up to €300,000 and 30% above that.
Source: Spanish Tax Agency, 2025 Income Tax practical manual (deferral regime under article 94 of the Income Tax Act, and tax on the savings base). Informational summary: your case may have particularities.
Only invest money you will not need for years. Before that, build an emergency fund covering several months of expenses, in an interest-bearing account.
A robo-advisor if you do not want to decide, an ETF plan if you want the lowest cost, funds on your own if you want control and the transfer advantage.
A fixed amount on the same day each month, right after payday. Investing should not depend on remembering or on how the market looks.
Falls will come for sure; selling during them is what turns a bad spell into a real loss. Review once a year, not once a day.
How much would you need to contribute to live off your investments? The FIRE calculator estimates it with your numbers.
FIRE calculatorBuffett has spent years recommending a low-cost index fund for most investors. We cover it in our book.
Comiendo con Warren BuffettWhat about the fixed-income side of the portfolio? Bonds, yield to maturity and savings accounts, explained in our guide.
Investing in bondsYou know how to invest: now choose the fund. Funds by index with ISIN and TER, and their ETF equivalent.
Best index fundsIf you go for the robo-advisor: real fees, official returns and simulator in our Indexa review.
Indexa Capital reviewIt is an investment fund that tracks a stock market index, such as the MSCI World or the S&P 500, by buying the same companies in the same proportions. With no manager picking stocks, it costs very little: the Vanguard Global Stock Index, for example, has ongoing charges of 0.18% a year.
Not much. The automatic ETF plans of the brokers in this guide accept contributions from €1 to €15, MyInvestor launches its index portfolios from €150, and the robo-advisors Indexa Capital, Finizens and inbestMe ask for €1,000.
It depends on how much you want to decide. The robo-advisor picks the funds, rebalances and keeps tax-free transfers, in exchange for a management fee. The ETF plan is cheaper, but you choose the products and every switch goes through the tax office.
They invest in the same thing. In Spain the difference is tax: you can transfer between funds without paying tax, but not between ETFs, because every sale is taxed. ETFs are bought through a broker like a share; funds, through a fund platform or a robo-advisor.
The value of an index fund rises and falls with the market, and in the short term you can lose. The provider is a separate matter: guarantee schemes, such as FOGAIN in Spain (up to €100,000), cover the provider’s insolvency, never market falls.
Nobody knows in advance. An index fund earns the return of the index it tracks minus its costs, with very good years and very bad ones. That is why it is approached as a long-term investment, ten years or more, with money you will not need.
Only when you redeem at a gain: it is taxed in the savings base of income tax, from 19% to 30% depending on the amount. As long as you do not sell, or you transfer from one fund to another, you pay nothing. ETF sales and dividends are taxed in the year.
No. It is informational: it compares the public terms of several providers so you understand the options. Smart Money Activity does not provide financial advice and does not know your situation. If in doubt about your case, consult an adviser registered with the CNMV.
Disclosure: some links on this page may be affiliate or refer-a-friend links, and are marked with an asterisk. If you open an account through them, Smart Money Activity may receive a commission or a benefit, at no cost to you. It does not affect which providers appear or their order, which is alphabetical.
Informational and educational content; it is not financial advice or a personal recommendation. Investing involves the risk of loss. Always check the current terms on each provider’s website and its registration with the CNMV.