Split your income · 70% living · 20% savings · 10% debt or giving
| After | Total Contributed | Interest Earned | Balance |
|---|
Powered by Toolraxy
Founder & CEO, Toolraxy
Faiq Ur Rahman is a web designer, digital product developer, and founder of Toolraxy, a growing platform of web-based calculators and utility tools. He specializes in building structured, user-friendly tools focused on health, finance, productivity, and everyday problem-solving.
User Ratings:
ADVERTISEMENT
ADVERTISEMENT
Budgets fail when they demand too much detail. The 70/20/10 rule takes the opposite approach: three buckets, three percentages, one decision per paycheck. Seventy percent covers everything you need to live. Twenty percent goes toward savings and investments. The remaining ten percent handles either debt repayment or charitable giving your choice, and this tool lets you toggle between them.
That simplicity is the point. If you have ever abandoned a 12-category spreadsheet by the second week, this rule gives you a structure you can actually maintain. It works for a first salary, a dual-income household, or someone rebuilding after a financial setback, because the math scales with whatever you earn.
This calculator handles the arithmetic and adds something a written rule cannot: it checks your actual numbers against the target split, then shows what consistent saving would compound into over one, five, ten, twenty, and thirty years.
Choose a currency: 22 options are available, and every figure on the page updates to match.
Enter your monthly net income (take-home pay, after tax and deductions). The default is $5,000.
Set an expected annual return for the savings projection, or leave it at the 6% default if you’d rather not guess.
Decide what the 10% bucket represents by tapping either Debt Repayment or Giving / Charity, the labels and analysis adapt to your pick.
Review the three target cards to see the dollar amount each percentage represents, monthly and annually.
Optionally fill in your actual spending figures for living expenses, savings, and the 10% bucket.
Study the comparison bars, each one places your real number against the target and labels it On Target, Slightly Over/Under, or Out of Range.
Scroll to the projection table to see what your monthly savings contribution becomes at 1, 5, 10, 20, and 30 years.
At its core, the rule is three multiplications performed on a single input: your monthly net income.
Formula: Target Living = Monthly Net Income × 0.70
Formula: Target Savings = Monthly Net Income × 0.20
Formula: Target 10% Bucket = Monthly Net Income × 0.10
Formula: Unallocated = Monthly Net Income − (Actual Living + Actual Savings + Actual 10% Bucket)
The projection uses the future value of an ordinary annuity, compounding monthly:
Formula: Future Value = Monthly Contribution × ((1 + i)^n − 1) ÷ i
Where i is the annual return divided by 12, and n is the number of months.
Every field clamps to zero or above blank entries, negative values, and stray characters are read as zero rather than triggering an error. The return rate field accepts 0–30%, and a rate of exactly 0% is handled separately, producing simple addition instead of division by zero.
If you leave all three actual-spending fields empty, the tool displays targets only and shows a neutral “Targets Set” badge. Once any actual figure is entered, the comparison engine activates: living expenses are judged on whether they stay at or below 105% of target, while savings and the 10% bucket are judged on whether they reach at least 95% of theirs.
Take someone earning $5,400 per month after tax, who has selected Debt Repayment for the 10% bucket and entered a 6% expected return.
Targets produced by the rule:
Living (70%): $3,780/month – $45,360/year
Savings (20%): $1,080/month – $12,960/year
Debt (10%): $540/month – $6,480/year
What they actually do:
Living expenses: $3,700
Savings: $1,100
Debt payment: $500
Total allocated comes to $5,300, leaving $100 unallocated.
The comparison bars show living expenses at $80 *under* target (labelled “On Target”), savings $20 over target (“On Target”), and debt payments $40 short (“Slightly Under”). Because living and savings both clear their thresholds but debt falls just shy, the badge reads 
Close to the Rule.
The takeaway: the shape of the budget is right. The fix is small — redirect that $100 of unallocated cash into the debt bucket and the split lands almost exactly on target.
Growth projection at $1,100/month, 6% annual return:
After 10 years: $132,000 contributed, $48,268 interest, $180,268 balance
After 30 years: $396,000 contributed, $715,000+ interest, over $1.1 million balance
Net income, your take-home pay after taxes, retirement contributions, and other payroll deductions. Running the percentages against gross salary produces targets that are too high to hit, since you never actually receive the full amount.
The calculator is built around one or the other, since splitting 10% in half weakens both goals. In practice, most people direct it to debt first and switch to giving once high-interest balances are cleared.
It emerged as a simplified alternative to the 50/30/20 framework popularised by Senator Elizabeth Warren. By collapsing needs and wants into a single 70% envelope, it trades diagnostic detail for a structure that is easier to remember and maintain.
That usually signals a housing cost problem rather than a budgeting one. The rule has no built-in remedy for it, the realistic options are increasing income, reducing housing costs, or temporarily accepting a lower savings rate until one of those changes.
It uses whatever monthly figure you enter, so the most reliable approach is to base the split on your lowest typical month. Any income above that baseline can be allocated as a bonus rather than built into the core targets.
No. The growth table shows nominal balances at the return rate you specify. To approximate real purchasing power, subtract your expected inflation rate from the return field. for example, entering 3% instead of 6%.
Switch the 10% toggle to Giving / Charity, or add that 10% to your savings figure manually. Many people debt-free choose to run an effective 70/30/0 split by redirecting the full 10% into investments.
Yes. Twenty-two currencies are supported, from USD and EUR to INR, PKR, AED, and BRL. Selecting one updates every currency symbol on the page, though the underlying arithmetic is identical.
It can be difficult, and the rule is a target rather than a requirement. Starting at 10% and increasing by one percentage point every few months is a common approach that builds the habit before the amount.
The badge checks each bucket independently, not your overall total. If living expenses are on target but savings fall below 95% of the 20% goal, the badge reflects that specific shortfall.
No. The target cards always reflect the full 70/20/10 split of your income. Actual figures only affect the comparison bars, the unallocated amount, and the analysis text.
Any time your income changes, and otherwise once a quarter. A raise, a rent increase, a new loan, or paying off a balance can all shift where the 10% should go.
ADVERTISEMENT
ADVERTISEMENT
