This budget calculator applies the best-known budgeting framework — the 50/30/20 rule — to your take-home pay: 50% to needs, 30% to wants, 20% to savings and debt payoff, with your actual spending compared line by line.
| Category | Rule target | Your actual | Difference |
|---|---|---|---|
| Needs (50%) | |||
| Wants (30%) | |||
| Savings & Debt (20%) |
The Rule (Popularized by Elizabeth Warren’s “All Your Worth”)
After-tax income divides by function: Needs (can’t skip), Wants (joy, optional), Savings (future you — including debt payoff beyond minimums). The ratio’s power is diagnostic: a budget at 70/20/10 isn’t “bad discipline,” it’s usually a housing-cost signal. Feeding the 20% toward an Emergency Fund first is the canonical sequence; the take-home figure itself comes from our Salary Calculator. Part of our Finance Calculators collection.
Worked Example (Verified)
- $5,000 take-home → Needs target $2,500, Wants $1,500, Savings $1,000
- The example entries (needs $2,650, wants $1,400, savings $950): needs run $150 over (a 53% share — typical rent pressure), wants $100 under, savings $50 shy — a budget that’s close, with exactly one structural conversation to have (housing/transport, the two needs that dominate)
- At $3,000 take-home the same ratios give 1,500/900/600 — the rule scales down gracefully, which is its advantage over fixed-dollar advice
Adapting the Rule Without Breaking It
- High cost-of-living: 60/25/15 is the realistic big-city edition; protect the savings share last, trim wants first.
- Debt payoff sprint: temporarily 50/20/30 — wants yield, savings line includes the extra principal.
- High earners: needs naturally shrink as a share; the discipline flips — cap wants’ share as income grows or lifestyle inflation eats the raise.
- Re-run it after every raise/relocation/loan payoff; budgets are snapshots of a moving life.
Related Tools
- Emergency Fund Calculator — where the 20% goes first
- Salary Calculator — find your real take-home
- Finance Calculators — the full collection
Frequently Asked Questions
What is the 50/30/20 budget rule?
Spend roughly 50% of take-home pay on needs, 30% on wants, and save or extra-pay-debt with 20%. On $5,000 take-home that’s $2,500 / $1,500 / $1,000. It originates from Elizabeth Warren and Amelia Warren Tyagi’s “All Your Worth” (2005).
What counts as a need vs a want?
Needs: housing, basic groceries, utilities, transport to work, insurance, minimum loan payments, essential childcare. Wants: dining out, premium groceries, entertainment, travel, upgraded everything. The gray zones (a car in a transit-less town, a phone plan) resolve by asking “would my income survive losing this?” — needs protect earning capacity.
My needs are 65% — is my budget broken?
Your housing market is, more likely — in high-rent metros, needs over 50% are structural. The fix order: attack the biggest need (housing/transport together are usually 40%+ alone), keep wants lean, and defend at least a 10% savings share while income or location changes catch up.
Does the 20% include retirement contributions?
Yes — 401(k) contributions (yours plus employer match, counted consistently), IRA funding, extra debt principal and taxable saving all count. If retirement comes out pre-tax before your “take-home,” add it back to both sides for a true ratio.
Is 50/30/20 right for everyone?
It’s a starting compass for median situations. Low incomes bend needs upward unavoidably; high incomes should bend savings upward deliberately. The permanent value is the three-bucket clarity — any ratio you can articulate and sustain beats a perfect ratio abandoned by March.
Is this budget calculator free?
Yes — free, instant, and your numbers stay in your browser.