Blu Tools

Numbers first, decisions after.

Ten quick calculators for tax, loans and investments. Everything runs in your browser — nothing is stored.

Financial growth charts on a laptop screen

EMI Calculator

Monthly instalment, total interest and total outgo on any loan.

Monthly EMI
₹22,493
Total interest
₹28,98,356
Total payment
₹53,98,356

Works out the monthly instalment on a home, business or personal loan, along with the total interest you will pay over the full tenure.

Who it's for

Home buyers, business owners planning a term loan, and anyone comparing lender offers.

Key information

  • A longer tenure lowers the EMI but sharply increases total interest.
  • Even a 0.25% lower rate can save lakhs over a 20-year loan.
  • Home loan interest and principal may qualify for deductions — check which regime you are in.
Tax return form, calculator and pen on a desk

Income Tax — Old Regime

Tax payable under the old regime after deductions.

Total tax (incl. 4% cess)
₹1,06,600
Taxable income
₹9,50,000
Effective rate
8.9%

Estimates tax under the old regime, where deductions such as 80C, 80D, HRA and home loan interest reduce your taxable income.

Who it's for

Salaried individuals and professionals with significant deductions or housing loans.

Key information

  • Compare the result with the new regime before you choose.
  • Keep proofs for every deduction you claim.
  • The regime choice can differ year to year for salaried taxpayers.
Tax return form, calculator and pen on a desk

Income Tax — New Regime

Tax payable under the new regime slabs with standard deduction.

Total tax (incl. 4% cess)
₹0
Taxable income
₹11,25,000
Effective rate
0.0%

Estimates tax under the new regime slabs with the standard deduction, without most exemptions and deductions.

Who it's for

Taxpayers with few deductions, new earners and those who prefer a simpler filing.

Key information

  • The new regime is the default — you must opt out to use the old one.
  • Run both calculators side by side before filing.
  • Business income has restrictions on switching regimes each year.
Savings jar and rising stacks of coins

FIRE Calculator

The corpus you need to retire early, and how long it takes.

FIRE corpus needed
₹2,25,00,000
Time to reach it
11 yr 3 mo
Annual withdrawal
₹9,00,000

Calculates the corpus you need for financial independence at your chosen withdrawal rate, and how long your current investing pace takes to get there.

Who it's for

Professionals and founders planning early retirement or a work-optional life.

Key information

  • A 4% withdrawal rate is a common starting assumption, not a guarantee.
  • Model expenses in today's money and revisit annually for inflation.
  • Tax on withdrawals matters — plan the asset mix, not just the number.
Savings jar and rising stacks of coins

SIP Calculator

What a monthly SIP grows into over time.

Maturity value
₹58,08,477
Total invested
₹30,00,000
Estimated gains
₹28,08,477

Projects what a monthly SIP grows into, splitting the maturity value into what you invested and what the returns added.

Who it's for

Salaried investors, first-time mutual fund investors and goal-based savers.

Key information

  • Starting five years earlier usually beats investing a larger amount later.
  • Step up the SIP with each salary revision.
  • Returns are indicative — equity outcomes vary year to year.
Financial growth charts on a laptop screen

CAGR Calculator

Compound annual growth rate between two values.

CAGR
20.11%
Absolute return
150.0%
Gain
₹7,50,000

Converts a start value and an end value into the compound annual growth rate, so you can compare very different investments fairly.

Who it's for

Investors, business owners tracking revenue growth and anyone reviewing a portfolio.

Key information

  • CAGR smooths volatility — it hides the bumpy years.
  • Always compare CAGR over identical periods.
  • Compare post-tax outcomes, not just headline growth.
Savings jar and rising stacks of coins

Lumpsum Calculator

Future value of a one-time investment.

Maturity value
₹31,05,848
Invested
₹10,00,000
Estimated gains
₹21,05,848

Shows the future value of a one-time investment at an expected annual rate of return.

Who it's for

Anyone deploying a bonus, maturity proceeds or a business surplus.

Key information

  • Consider staggering a large lumpsum into the market over a few months.
  • Match the tenure to the goal, not to the product.
  • Factor in exit loads and capital gains tax.
Financial growth charts on a laptop screen

Loan Eligibility

Indicative loan amount and repayment based on your income.

Eligible loan amount
₹61,12,972
EMI capacity
₹55,000
Total repayment
₹1,32,00,000

Estimates how much a lender may sanction, based on your income, existing EMIs and the FOIR most lenders apply.

Who it's for

Home and business loan applicants checking affordability before applying.

Key information

  • Closing a small existing EMI can meaningfully raise eligibility.
  • Credit score, income stability and documentation still decide the final sanction.
  • Keep total EMIs comfortably below the lender's FOIR ceiling.
Business invoice with GST and a calculator

GST Calculator

Add GST to a base price or extract it from a gross amount.

GST (exclusive)
₹18,000
Total with GST
₹1,18,000
GST inside this amount
₹15,254

Adds GST to a base price or extracts the GST already sitting inside a gross amount, at any rate you choose.

Who it's for

Businesses raising invoices, freelancers quoting clients and buyers verifying bills.

Key information

  • Check the correct HSN/SAC rate before invoicing.
  • Input tax credit depends on your supplier actually filing their return.
  • Registration thresholds differ by state and by type of supply.
Savings jar and rising stacks of coins

FD / Investment Calculator

Maturity value of a fixed deposit, compounded quarterly.

Maturity value
₹7,07,389
Interest earned
₹2,07,389
Principal
₹5,00,000

Calculates the maturity value and interest earned on a fixed deposit, compounded quarterly.

Who it's for

Conservative savers, retirees and businesses parking short-term surplus.

Key information

  • FD interest is taxable at your slab rate — the post-tax return is lower than it looks.
  • TDS applies above the prescribed interest threshold.
  • Laddering deposits keeps liquidity without breaking a single large FD.

These calculators give indicative estimates based on the inputs provided and commonly applicable rules. They are not tax or investment advice — talk to a Bluman Chartered Accountant before acting on the numbers.