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Investment · FINANCIAL TOOLS

Savings Rate Calculator

See what share of your income you actually invest, and how much is left unallocated each month.

Understand the calculation

Calculation logic, formula, example and guardrails behind the estimate.

How it works

Your outgoings are subtracted from your income. What you deliberately invest becomes the savings rate; what is left over after everything, including those investments, is reported separately as unallocated.

That separation is deliberate. Money invested is committed; money merely left over usually gets spent. Reporting them as one figure would flatter the position, so the calculator keeps them apart and shows what the rate would become if the surplus were directed too.

More detail

The instalment share is shown alongside, because debt service is the one outgoing that is hard to reduce quickly and therefore constrains the rate most.

Nothing is projected. This is one month described, which is the input every long-term projection depends on.

Once you know what you can invest each month, the SIP calculator.

For the position this rate is building towards, use the net worth calculator.

Formula

Savings rate = Invested ÷ Income; Surplus = Income − Outgoings

Two ratios rather than a model. Outgoings include the invested amount, so the surplus is genuinely unallocated rather than double-counted.

Invested
Money deliberately set aside each month.
Income
Monthly take-home, after tax and deductions.
Outgoings
Essentials, discretionary spending, instalments and the invested amount combined.
Worked example

A ₹1,50,000 monthly income with ₹50,000 of essentials, ₹25,000 discretionary, ₹30,000 of instalments and ₹30,000 invested.

  1. 01Total outgoings₹1,35,000
  2. 02Savings rate₹30,000 ÷ ₹1,50,000 = 20%
  3. 03Unallocated each month₹15,000
  4. 04Rate if the surplus were invested too30%
  5. 05Instalments to income20%

A 20% rate with another 10% sitting unallocated. Whether to direct that surplus is a decision this calculator does not make — but knowing the gap between 20% and 30% is what makes the decision a real one.

Frequently asked questions

Common questions about the savings rate calculator and the assumptions behind it.

Disclaimer

This calculator is provided for general information and planning only. It is not investment, tax or legal advice, and it does not take your personal circumstances into account. Outputs are estimates based on the assumptions stated on this page, exclude taxes and charges unless said otherwise, and market-linked returns are not guaranteed — the value of investments can fall as well as rise. Lending terms, rates and eligibility are decided by the lender. For advice on your own situation, speak to a qualified professional, several of whom you can consult on Finvestalk.