Passive income is money arriving without you working for it at that moment: interest on savings, dividends from investments, rent from a property you let.
The word "passive" is the misleading part, and that is the most useful thing to know about it. Nearly every form asks for something up front, whether capital, time, or both. What you are buying is not effortlessness but the separation of your income from your hours.
The forms
| Form | What you put in first | How passive it really is |
|---|---|---|
| Interest on savings | Capital | Fully, though the return is typically low |
| Dividends from shares or ETFs | Capital | Largely, provided you do not watch daily |
| Bonds | Capital | Largely, with a fixed term |
| Letting property | Substantial capital and time | Limited, unless management is outsourced |
| Renting out items or space | Little capital, some time | Limited |
| Digital products or content | Mostly time | Unpredictable, with a long run-up |
The first three run on capital you already have. The last three run on work done up front and harvested later. Fundamentally different things under one label.
The arithmetic people skip
For income from capital there is a ratio that cannot be hurried: your monthly income is your capital times your yield, divided by twelve.
At a three per cent yield, €100,000 produces roughly €250 a month gross. Want €1,000 a month at the same yield and you need around €400,000.
That is not discouragement, it is a benchmark, and it explains why passive income from investing is mostly a consequence of building wealth rather than a fast route to it.
Four places it goes wrong
- Reading a high percentage as good news. Dividend yield has price in the denominator, so a price falling by a third raises the yield by half without paying you a cent more. Look at the amount in euros, not the percentage.
- Confusing gross and net. Withholding tax applies, sometimes in two countries for foreign shares.
- Forgetting costs. Transaction, currency and management costs reduce net income. With property, maintenance, insurance, vacancy and management are not side items.
- Mistaking concentration for strategy. The highest-paying holdings cluster in a few sectors, so a portfolio selected on payout is rarely well diversified.
How to measure whether it works
- The amount per month or year, not the percentage. It is the only figure directly comparable to your fixed costs.
- The trend over time. Is your income growing, or only your capital?
- Yield on cost alongside yield on value. Both are correct; they answer different questions.
- Cuts, separately. A company reducing its payout disappears into an annual average but shows up immediately on a timeline.
- Your total return. Income plus price movement together. A holding with a beautiful payout and a falling price can cost you money on balance. See Calculating your portfolio's real return.
That last point is the most important and the least popular. Income feels more tangible than capital growth, which makes it easy to fixate on the payout while your total result lags.
In practice
Gylder shows both the yield and the dividends received over twelve months in euros per position, so you can interpret a moving percentage. The Dividends tab plots your payment history over time, making cuts and rises visible in a way a single trailing percentage never can.
Nothing is projected about what a holding will pay next year. Everything you see has actually been paid.