How this calculator works
The 50/30/20 rule sends half of take-home pay to needs, 30% to wants and 20% to savings or extra debt payments. Enter what your needs actually cost and the tool shows how far you are from the target.
- Needs = take-home pay × 0.50
- Wants = take-home pay × 0.30
- Savings & debt = take-home pay × 0.20
Worked example
With these inputs: monthly take-home pay $4,200; your current needs $2,300.
The result is monthly plan for $4,200.00, with needs (50%) $2,100.00 and wants (30%) $1,260.00. Needs are $200.00 over the 50% line. Trim a bill or shift the gap out of wants, not savings.
What counts as a need, a want, or savings
Needs: bills you'd have to pay no matter what. Rent or mortgage, utilities, groceries, insurance, transport to work, childcare and minimum debt payments.
Wants: things you choose. Eating out, streaming and other subscriptions, hobbies, travel, upgrades beyond the basics.
Savings & debt: an emergency fund, retirement contributions, and any payment above a debt's minimum.
When your needs are over 50%
In a high-rent city, needs above 50% are common. Don't take the gap out of savings. Take it out of wants first, then look at your largest bills. A rent or insurance change moves the needle more than cancelling a streaming service.
Track your needs as bills so you know the real total each month instead of a guess. The Monthly Budget Calculator breaks spending into categories if you want more detail.
Frequently asked questions
Is the 50/30/20 rule based on gross or net income?
Take-home (net) pay, after taxes and payroll deductions. If retirement contributions come out of your paycheck, you can count them toward the 20%.
What if I have a lot of debt?
Pay minimums from the 50% needs share and put everything above the minimums in the 20% share. Some people run 50/20/30 for a while, cutting wants to speed up payoff. The Debt Snowball Calculator shows how much time that saves.
Is 50/30/20 realistic on a low income?
It can be hard when rent alone is close to half your pay. Treat the percentages as targets, not pass-or-fail rules. Even 5% saved consistently builds an emergency fund.
Where do irregular bills fit?
Divide yearly or quarterly bills (car registration, insurance premiums) by 12 and include the monthly share in needs, so they don't catch you out when they come due.