★ MONEY · BUDGET · 70-20-10 RULE
Needs $3,500.00, wants $1,000.00, savings $500.00. On $5,000 a month after tax, the 70-20-10 rule saves $6,000.00 a year and $30,000.00 in five years. Enter your pay and test your own split.
The 70-20-10 rule splits after-tax pay into 70% needs, 20% wants and 10% savings. This calculator works out the three amounts on your pay, the savings over a year and five years, and how long it takes to save one month of needs — and lets you test your own split.
The 70-20-10 rule splits after-tax income into three shares: 70% for needs, 20% for wants and 10% for savings. Each share is the income times the percentage divided by 100. The annual savings is the monthly savings times 12, and the five-year savings is the monthly savings times 60, with no interest. The months to save one month of needs is the needs divided by the savings. The emergency fund after 6 months is 6 times the monthly savings, and the months of needs it covers is 6 times the savings divided by the needs. The split applies to after-tax income; “needs” are housing, utilities, groceries, transport, insurance, minimum debt payments; “wants” are dining out, streaming, travel, hobbies; “savings” includes extra debt payments and investing. The 70/20/10 split is a starting point — the page says to adjust it to your rent and pay (high-rent cities often need 80/10/10 or tighter wants).
At the defaults — $5,000 a month after tax, split 70/20/10 — the needs are $5,000 × 70% = $3,500.00, the wants are $5,000 × 20% = $1,000.00, and the savings are $5,000 × 10% = $500.00. The annual savings are $500.00 × 12 = $6,000.00, and the five-year savings are $500.00 × 60 = $30,000.00. One month of needs takes $3,500.00 ÷ $500.00 = 7.00 months to save. After 6 months you have $500.00 × 6 = $3,000.00 saved, which is 0.86 months of needs.
| Case | Needs | Wants | Savings | Annual savings | Five-year | Months to save one month of needs |
|---|---|---|---|---|---|---|
| Default ($5,000, 70/20/10) | $3,500.00 | $1,000.00 | $500.00 | $6,000.00 | $30,000.00 | 7.00 months |
| $3,000 a month | $2,100.00 | $600.00 | $300.00 | $3,600.00 | $18,000.00 | 7.00 months |
| $8,000 a month | $5,600.00 | $1,600.00 | $800.00 | $9,600.00 | $48,000.00 | 7.00 months |
| $10,000 a month | $7,000.00 | $2,000.00 | $1,000.00 | $12,000.00 | $60,000.00 | 7.00 months |
| 60/25/15 split | $3,000.00 | $1,250.00 | $750.00 | $9,000.00 | $45,000.00 | 4.00 months |
| 50/30/20 split | $2,500.00 | $1,500.00 | $1,000.00 | $12,000.00 | $60,000.00 | 2.50 months |
Setup: monthly after-tax income $5,000, split 70/20/10.
Line 1 — the needs. $5,000 × 70% = $3,500.00. Housing, utilities, groceries, transport, insurance, minimum debt payments.
Line 2 — the wants. $5,000 × 20% = $1,000.00. Dining out, streaming, travel, hobbies.
Line 3 — the savings. $5,000 × 10% = $500.00. Extra debt payments and investing.
Line 4 — the year. $500.00 × 12 = $6,000.00 saved in a year, and $500.00 × 60 = $30,000.00 in five years, with no interest.
Line 5 — the first month of needs. $3,500.00 ÷ $500.00 = 7.00 months to save one month of needs. After 6 months you have $3,000.00 saved, which is 0.86 months of needs.
Reverse: the income for $1,000.00 a month of savings at 10% is $10,000.00 (exact 10000.0000 — $1,000.00 × 100 ÷ 10); the savings rate for $800.00 a month of savings on $5,000 is 16.00% (exact 16.0000 — $800.00 ÷ $5,000 × 100); the income where wants are $1,500.00 a month at 20% is $7,500.00 (exact 7500.0000, needs then $5,250.00); the income where needs are $4,200.00 a month at 70% is $6,000.00 (exact 6000.0000).
$3,000 a month: the needs are $2,100.00, the wants are $600.00 and the savings are $300.00; the annual savings are $3,600.00 and the five-year savings are $18,000.00. One month of needs still takes 7.00 months to save, because the months to save one month of needs is the needs share divided by the savings share, and the income cancels out.
$8,000 a month: the needs are $5,600.00, the wants are $1,600.00 and the savings are $800.00; the annual savings are $9,600.00 and the five-year savings are $48,000.00. One month of needs still takes 7.00 months to save.
$10,000 a month: the needs are $7,000.00, the wants are $2,000.00 and the savings are $1,000.00; the annual savings are $12,000.00 and the five-year savings are $60,000.00. One month of needs still takes 7.00 months to save.
60/25/15 split: the needs are $3,000.00, the wants are $1,250.00 and the savings are $750.00; the annual savings are $9,000.00 and the five-year savings are $45,000.00; one month of needs takes 4.00 months to save. Five points more of savings cuts the wait from 7 months to 4.
50/30/20 split: the needs are $2,500.00, the wants are $1,500.00 and the savings are $1,000.00; the annual savings are $12,000.00 and the five-year savings are $60,000.00; one month of needs takes 2.50 months to save. Doubling the savings share more than halves the wait.
Reverse — the other way round: the income for $1,000.00 a month of savings at 10% is $10,000.00; the savings rate for $800.00 a month of savings on $5,000 is 16.00%; the income where wants are $1,500.00 a month at 20% is $7,500.00, with needs then $5,250.00; the income where needs are $4,200.00 a month at 70% is $6,000.00.
The model assumes the income is monthly and after tax, and the three percentages add up to 100 — check them, because a split that adds to 99% or 101% is an error, not a plan. It assumes the five-year savings have no interest: $500.00 a month for 60 months is $30,000.00, and any interest on top of that is a bonus, not a promise. It assumes the months to save one month of needs is the needs divided by the savings, which is the needs share divided by the savings share — so it does not depend on the income at all. With a 0% savings share the savings are $0.00 and one month of needs is never saved — raise the savings share above 0%. It assumes extra debt payments belong in the savings share, and the minimum debt payment belongs in needs. Rounding convention: money is rounded to cents, the reverse incomes and rates to two decimals with the exact value to four, and all figures are computed from unrounded values, rounded only for display.
| Output | Formula | What it means |
|---|---|---|
| Needs | income × needs % ÷ 100 | $3,500.00. |
| Wants | income × wants % ÷ 100 | $1,000.00. |
| Savings | income × savings % ÷ 100 | $500.00. |
| Annual savings | monthly savings × 12 | $6,000.00. |
| Five-year savings | monthly savings × 60 (no interest) | $30,000.00. |
| Months to save one month of needs | needs ÷ savings | 7.00 months; with a 0% savings share it is never — raise the savings share above 0%. |
| Saved after 6 months | monthly savings × 6 | $3,000.00. |
| 6 months of saving covers | 6 × savings ÷ needs | 0.86 months of needs. |
| Income for $1,000.00/mo savings | $1,000 × 100 ÷ 10 | $10,000.00 (exact 10000.0000). |
| Savings rate for $800.00/mo savings | $800 ÷ $5,000 × 100 | 16.00% (exact 16.0000). |
| Income where wants are $1,500.00/mo | $1,500 × 100 ÷ 20 | $7,500.00 (exact 7500.0000, needs then $5,250.00). |
| Income where needs are $4,200.00/mo | $4,200 × 100 ÷ 70 | $6,000.00 (exact 6000.0000). |
| $3,000 a month | same model, $3,000 income | Needs $2,100.00, wants $600.00, savings $300.00; annual savings $3,600.00, five-year $18,000.00; one month of needs takes 7.00 months to save. |
| $8,000 a month | same model, $8,000 income | Needs $5,600.00, wants $1,600.00, savings $800.00; annual savings $9,600.00, five-year $48,000.00; one month of needs takes 7.00 months to save. |
| $10,000 a month | same model, $10,000 income | Needs $7,000.00, wants $2,000.00, savings $1,000.00; annual savings $12,000.00, five-year $60,000.00; one month of needs takes 7.00 months to save. |
| 60/25/15 split | same model, 60/25/15 at $5,000 | Needs $3,000.00, wants $1,250.00, savings $750.00; annual savings $9,000.00, five-year $45,000.00; one month of needs takes 4.00 months to save. |
| 50/30/20 split | same model, 50/30/20 at $5,000 | Needs $2,500.00, wants $1,500.00, savings $1,000.00; annual savings $12,000.00, five-year $60,000.00; one month of needs takes 2.50 months to save. |
The math is exact for the numbers you enter: each share is the income times the percentage divided by 100, and the annual and five-year savings are the monthly savings times 12 and 60. What the model cannot do is know your pay: check that the income is after tax, because the split is worked out on take-home pay, not on the salary before tax. It assumes the five-year savings have no interest, and it leaves out employer matches, tax refunds and any other windfalls. It assumes the percentages add to 100 and that extra debt payments belong in the savings share. For the paycheck after tax, see take-home pay calculator; for how fast an emergency fund grows, see emergency fund calculator.
Bright Side Kit. "70-20-10 Rule Calculator: Needs, Wants & Savings 2026." https://brightoolbox.com/70-20-10-rule-money-calculator/ Accessed October 25, 2026.It splits your after-tax pay into 70% needs, 20% wants and 10% savings. On $5,000 a month after tax, the split gives needs $3,500.00, wants $1,000.00 and savings $500.00. That is $6,000.00 saved in a year and $30,000.00 in five years, with no interest. The rule is a starting point, not a law: adjust it to your rent and pay, and change the percentages on the calculator to test your own split.
Needs are what you must pay to live and work; wants are what you choose to enjoy. Needs are housing, utilities, groceries, transport, insurance and minimum debt payments. Wants are dining out, streaming, travel and hobbies. The line is not always sharp: a phone is a need, the newest phone is a want, and groceries are a need while takeout is a want. If a cost keeps the lights on or gets you to work, it is a need; if it makes life nicer, it is a want.
$500 at the 10% share. Ten percent of $5,000 is $500.00 a month, which is $6,000.00 a year and $30,000.00 in five years. One month of needs takes 7.00 months to save at that rate, and after 6 months you have $3,000.00 saved, which is 0.86 months of needs. A 15% share saves $750.00 a month, and a 20% share saves $1,000.00 a month.
Tighten wants first, then savings — the split is a target, not a law. In a high-rent city the needs share often runs over 70%, and the rule says to cut the wants first: a 80/10/10 split on $5,000 gives needs $4,000.00, wants $500.00 and savings $500.00. Cutting savings last keeps the habit alive. If needs are over 80%, the answer is not a better split — it is more income, a cheaper home, or a roommate.
Yes — the page counts them in the savings share. Extra debt payments are money going to your future, not money spent today, so they belong in the savings share with investing. The minimum debt payment is a need: it is the amount you must pay to stay current. Anything above the minimum is savings. Paying off a card at 20% interest is a better return than any savings account.
7.00 months at the default split. One month of needs is $3,500.00, and the savings are $500.00 a month, so $3,500.00 ÷ $500.00 = 7.00 months. A 60/25/15 split saves $750.00 a month, so it takes 4.00 months; a 50/30/20 split saves $1,000.00 a month, so it takes 2.50 months. The months to save one month of needs is the needs share divided by the savings share, so it does not depend on the income at all.