50/30/20 Budget Calculator

A budget you will actually stick to

Most budgets fail because they demand too much effort — tracking dozens of categories, logging every coffee, reconciling receipts. The 50/30/20 rule succeeds because it does the opposite. It divides your take-home pay into just three buckets and lets you spend freely within each. Half goes to needs, a third to wants, and a fifth to savings and debt repayment. That simplicity is exactly why so many households keep using it long after abandoning more elaborate systems.

What goes in each bucket

Getting the categories right is the whole game:

• Needs (50%) — the essentials you cannot skip: rent or home-loan EMI, groceries, utilities, insurance premiums, transport and the mandatory portion of any loan payment.
• Wants (30%) — everything discretionary: dining out, streaming subscriptions, travel, gadgets and lifestyle upgrades.
• Savings (20%) — your emergency fund, SIPs, PPF, NPS and any voluntary loan prepayment above the minimum EMI.

A useful test: if losing your job tomorrow, would you still pay for it? If yes, it is almost certainly a need.

Making the 20% work hardest

The savings bucket is where wealth is built, so its order of priority matters. Start by filling an emergency fund of three to six months' expenses. Next, attack high-interest debt — credit-card balances at 36–42% a year are a guaranteed drag on any financial plan. Only then channel the remainder into long-term investing through SIPs, PPF or NPS. Automating this transfer on salary day — before the money can leak into wants — is the single most powerful habit for staying on track.

Adapting the rule to real life

The ratios are a starting point, not a straitjacket. In expensive metros, rent alone can push needs past 50%; if so, trim the wants bucket first and treat restoring the ideal split as a medium-term goal that improves as your income grows. High earners, meanwhile, should view 20% as a floor and aim well above it, since living costs do not rise in step with a large salary.

For those with irregular income, apply the percentages to your average or most reliable monthly figure, banking surpluses in good months to smooth out the lean ones. However you adjust it, the core discipline stays the same: cover your essentials, keep lifestyle in check, and pay your future self first — every single month.