Byte · For beginner investors
8 min read · 30 May 2026
How much should I invest per month? The honest guide
Not what you *could* invest — but what you *should* invest based on your situation. Practical and pressure-free.
Save to Pinterest"How much should I invest?" is by far the most-Googled question from beginner investors.
The honest answer: it depends on five factors — and almost never on what others on TikTok are doing.
The five factors that matter
- Income — your net monthly income after taxes
- Fixed costs — what's left after rent, groceries, subscriptions?
- Emergency fund — do you already have 3-6 months of fixed costs in savings?
- Debt — do you have expensive debt (>7% interest)?
- Time horizon — when do you actually need this money?
Want an honest score? Run the Budget-to-Invest tool — 5 sliders, one clear answer.
Rules of thumb by income (after-tax)
Not hard-and-fast — but an honest starting point:
| Net income / month | Realistic deposit | Goal |
|---|---|---|
| €1,500 or less | €25-€50 | Building the habit |
| €1,500-€2,500 | €50-€150 | Starting wealth |
| €2,500-€3,500 | €150-€350 | Accelerating |
| €3,500-€5,000 | €350-€700 | Building structurally |
| €5,000+ | 10-20% of income | Optimising |
Important precondition: this assumes your emergency fund is in place, you have no expensive debt, and you can miss the money for 7+ years.
For your exact calculation: try the Monthly Investment Planner.
Level 1 — €25-50/month (the "just start" phase)
Who: student, first job, lower income, or someone just starting out.
Pros:
- Builds the most important thing: the habit
- Doesn't feel like sacrifice
- You learn how it works without financial stress
What it becomes (at 7% average over 30 years):
- €25/month → ~€30,000
- €50/month → ~€60,000
Honest warning: in the first 2-3 years, €25/month feels like "little effect". That's normal. The effect comes in years 15-30.
Level 2 — €100-200/month (the "real start" phase)
Who: stable job, no expensive debt, emergency fund building or complete.
Pros:
- Enough to truly build wealth
- Small enough to push through bad months
- Sweet spot for most 25-40-year-olds
What it becomes (at 7% average over 30 years):
- €100/month → ~€122,000
- €200/month → ~€244,000
Play with these numbers in our Compound Growth tool.
Level 3 — €300-500/month (the "I mean business" phase)
Who: healthy income base, all financial basics in order, focus on long-term wealth.
Pros:
- Retirement-level building
- Comfort for unexpected expenses
- Compounding really works for you here
What it becomes (at 7% average over 30 years):
- €300/month → ~€366,000
- €500/month → ~€610,000
Level 4 — 15%+ of income (the "FIRE" phase)
For anyone who wants financial independence before the regular retirement age. Not for everyone. Requires clear goals, discipline, and usually an adjusted lifestyle.
Not shameful if this isn't for you — it's a specific path, not an obligation.
The mistake most people make
They start too big.
First month: €500. Second month: €500. Third month: car breaks down — has to pull €300 out of investments. Loss of self-trust. Quits.
Better: start at €100/month. Build 6 months of confidence. Then increase.
The other mistake: waiting too long
"I'll only start once I can invest €500/month."
There's a mathematical lesson in there. Someone who starts at 25 with €100/month ends up at 65 with more than someone who starts at 35 with €200/month. Time beats deposit size.
The Time in the Market tool makes this visible.
The practical workflow
- Run Budget-to-Invest — see your readiness score
- Run Monthly Planner — see what's realistic for your numbers
- Halve that amount for the first 3 months — build confidence
- Automate — let it transfer automatically the day after payday
- Increase by €25-50 every six months until you reach a comfortable level
Closing word
The best amount isn't the highest amount — it's the amount you can keep up for 30 years without panic.
Better €50/month for 30 years than €400/month for 2 years.
Small. Automatic. Forgotten.
⚠️ Educational only. Not financial advice — an honest guide to think about, not to follow blindly.