Enter your numbers and I'll tell you where to start saving, how big a cushion you need and how long each goal would take.
with the extra payslips spread over twelve months
Moderate
You accept some falls in exchange for higher returns. A mix of stable products and stocks suits you.
A common benchmark is the 50/30/20 rule: half your pay for needs, 30% for wants and 20% for saving.
Enter how much you'd put in each month and the yearly return you expect from an index. According to MSCI, its world index, the MSCI WorldAn index of 1,249 large and mid-sized companies from 23 developed countries, as of 30 September 2026 according to MSCI. It is a common benchmark for the world stock market., returned 9.02% a year from 31 December 1987 to 30 September 2026, in US dollars, with dividends reinvested and before inflationThe general rise in prices. With 2% inflation, what costs €100 today will cost €102 a year from now.. That average mixes very good years with sharp falls: between 2007 and 2009 it lost as much as 57.46%.
In 20 years you'd have put in €132,000 and it would be worth €200,113. The difference, €68,113, is compound interestWhen gains are reinvested and earn gains of their own. That's why, over the years, the curve grows faster and faster.: gains that earn further gains.
It starts from what you've already invested and adds what you have left over each month now, unless you change it. The line is smooth because it's an average; in reality it goes up and down.
If everything you save goes into a stock fund, paying for the car means selling part of it and paying tax on the gain. That's why the usual advice, including the CNMVCNMV: Comisión Nacional del Mercado de Valores, Spain's securities regulator. The public body that supervises markets and investment products in Spain and publishes guides for investors.'s investor materials, is to split your money by when you'll need it.
A year or two before you buy, gradually move the money for that goal out of stocks into something steady, such as a money market fundA fund that invests in very short-term, low-risk debt. It earns little, but its value barely moves. It isn't guaranteed..
That's why the calculator counts the car with no return, the home deposit at the conservative rate (2%) and living off your investments at your profile's rate.
Sources: CNMV, time horizon · CNMV, fund transfers · 2026 IRPF brackets · MSCI World
This is educational material, not financial advice. The returns are assumptions and the past doesn't guarantee the future; before deciding what to do with your money, talk to a professional.