Portfelik

Budget Calculator (50/30/20)

A household budget calculator based on the popular 50/30/20 rule. Enter your net income, then your real spending, and see whether you're keeping to the plan.

The 50/30/20 rule splits your monthly net income into three parts: 50% for needs (things you can't easily skip), 30% for wants (the nice-to-haves) and 20% for savings and debt repayment. It's a simple starting point that's easy to adapt to your own situation.

Your numbers

What do you actually spend? (optional)

Proportions

Needs: 50%

Wants: 30%

Savings: 20%

Needs · 50%
zł 2,700.00
~zł 90.00 / day
Wants · 30%
zł 1,620.00
~zł 54.00 / day
Savings · 20%
zł 1,080.00
~zł 36.00 / day
Your plan

Needs 50%

Wants 30%

Savings 20%

How much could you save over time?

This is how your savings grow if you set aside the planned amount every month.

After 6 months
zł 6,480.00
a good bike 🚲
After 1 year
zł 12,960.00
a dream holiday ✈️
After 5 years
zł 64,800.00
a full home renovation 🔨
After 10 years
zł 129,600.00
a wedding 💍
Just saving
With investing (7% a year)
The chart ignores inflation and taxes. Money you set aside could grow faster if you invest it. Try the compound interest calculator
Want this to track itself?

Move this plan into Portfelik: create budgets for needs, wants and savings with these limits, and the app will add up your spending in each one and show how much is left until the end of the month.

Track it free

Frequently asked questions

It's a simple budgeting framework: split your monthly net (after-tax) income into 50% needs, 30% wants and 20% savings and debt repayment. It's easy to remember and needs just one number — your take-home pay — to start.

As a starting point, yes — but it often needs adjusting. According to GUS (2024), food alone is about 25% of household spending and housing with energy another ~19%, so for many Polish households 'needs' realistically take 55–70% of income rather than 50%. Treat it as a flexible guide: use the 60/20/20 or 70/20/10 presets if your fixed costs are higher, and aim to protect savings even if it's below 20%.

Potrzeby to wydatki, których trudno uniknąć: czynsz lub rata kredytu, rachunki, jedzenie, dojazdy, ubezpieczenia i minimalne raty. Zachcianki to wybory stylu życia: jedzenie na mieście, subskrypcje, hobby, podróże i zakupy ponad podstawy. Granica bywa płynna, dlatego ważne, by być uczciwym i konsekwentnym.

Net (after-tax) income — the money that actually reaches your account. The rule is built on what you can really spend, not your gross salary.

Poduszka bezpieczeństwa, emerytura i inwestycje oraz dodatkowa spłata długów ponad minimalne raty, np. nadpłata kredytu hipotecznego. 20% to raczej dolna granica niż górna, więc jeśli możesz, odkładaj więcej.