Borrowing
Compare monthly payments, total interest, amortization, and optional prepayments.
Best for comparing repayment structures before checking a lender's written quote.
Finance
Finance calculators for loans, investments, pricing, tax, and invoices.
Estimate payments and interest, model recurring or lump-sum growth, calculate prices and tax, and prepare invoices with the assumptions kept in view.
- Calculations run in this tab
- Rates and timing stay explicit
- Estimates, not advice
Decision guide
Start with the financial decision
The costly mistakes here are definitional rather than arithmetic: comparing two loans on the headline rate, reading markup as margin, or subtracting a tax percentage that the price already contained. Start from the decision and the matching tool shows the formula it actually applies.
Saving & investing
Model recurring contributions or lump-sum growth under an assumed rate.
Best for illustrating a contribution plan across several return assumptions.
Pricing & tax
Separate margin from markup, test discounts, and add or extract GST or VAT.
Best for checking unit economics and transaction arithmetic before billing.
Billing
Prepare an invoice from line items, discounts, tax details, and payment terms.
Best for turning already verified customer, price, and tax details into a printable document.
Tool directory
Finance tools
Showing 8 of 8 tools
EMI Calculator
Estimate fixed-rate loan EMI, total interest, and yearly amortization, then compare the modeled effect of a recurring principal prepayment.
Popular Trending
SIP Calculator
Model SIP or lump-sum growth from a constant return assumption, optional annual step-up, inflation input, chart, and yearly breakdown.
Popular Trending
GST Calculator
Add or extract a user-selected GST or VAT percentage, with illustrative country shortcuts and an optional India CGST/SGST split.
Popular Trending
Margin, Markup & Break-even Calculator
Calculate profit margin, markup, target price, break-even units, and net profit after discounts, marketplace fees, payment fees, shipping, packaging, and tax.
Popular Trending
Compound Interest Calculator
Model a lump sum and optional end-of-period deposits across five compounding frequencies, with effective yield and a yearly growth chart.
Popular
Discount Calculator
Work discounts in three directions — final price, original price, or % off — with stacked-offer math, optional tax, and the true effective discount.
Invoice Generator
Draft invoices with line items, discounts, optional CGST/SGST or IGST rows, amount in words, three templates, and browser print-to-PDF.
Mortgage & Home Loan Calculator
Estimate a fixed-rate mortgage payment, interest, and payoff date with optional ownership costs, extra principal, and amortization schedules.
Practical category guide
Use finance calculators as scenario tools, not final decisions
These eight tools cover four distinct jobs: estimating the cost and timing of borrowing, illustrating recurring or lump-sum growth, working through price and tax arithmetic, and preparing an invoice. Each result depends on the values and conventions you choose. Loan schedules use a fixed annual rate converted to monthly reducing-balance interest. SIP and compound-interest results apply a constant assumed return, but use different contribution timing. GST, discount, margin, markup, and break-even results follow the exact rate, cost, fee, and order of operations entered. The tools do not predict lender approval, future investment returns, inflation, tax treatment, or legal invoice compliance. Use the output to compare scenarios, then verify significant decisions against provider documents, current official rules, and qualified advice where appropriate.
A useful comparison changes one assumption at a time. Keep the principal, term, contribution, cost base, or tax direction constant while testing the variable you actually need to decide.
What the Finance tools help with
Compare payment and total cost
Every loan tool reports the total interest alongside the monthly payment, because the payment is the figure people compare and the total is the one that decides what the borrowing actually costs. Two loans with the same EMI over different terms can differ by years of income.
Separate projections from promises
The investment tools project the rate you type in and nothing more. They do not forecast a market, and they say so beside the result — a figure produced from an assumed 12% is an illustration of that assumption, not an expectation. Fees, tax and inflation are not modelled, and each of the three reduces a real outcome.
Price with the right denominator
Margin, Markup & Break-even Calculator separates profit as a percentage of revenue from profit as a percentage of cost, then connects unit economics to fixed costs.
Verify tax and document details
GST Calculator and Invoice Generator handle arithmetic and presentation, but the correct tax rate, classification, mandatory fields, and filing obligations remain jurisdiction-specific.
Selection guide
Which finance tool should I use?
Match the decision to the inputs and output you need. The final column is part of the choice: it names the assumption most likely to make a correct calculation misleading.
Start from the decision in front of you
- Comparing borrowing costs?
- Use EMI Calculator for a standard general-loan schedule and Mortgage & Home Loan Calculator when property costs, amortization, and extra-payment scenarios matter.
- Modeling savings or investments?
- Use SIP Calculator for start-of-month recurring contributions and Compound Interest Calculator for a lump sum or deposits made at the end of each selected compounding period.
- Working on price and tax?
- Use Margin, Markup & Break-even Calculator for profitability, Discount Calculator for final-price arithmetic, and GST Calculator to add or extract one selected tax rate.
- Preparing a bill?
- Use Invoice Generator after the customer, line items, discount, tax treatment, numbering, and required legal fields have been checked for the transaction.
Then compare inputs, output, and the assumption behind them
Estimate a general loan
EMI Calculator
- Inputs
- Principal, annual rate, term, optional monthly prepayment
- Output
- EMI, total interest, payoff schedule, prepayment comparison
- Watch
- Uses a fixed reducing-balance rate and excludes lender fees, insurance, and penalties.
Plan a property loan
Mortgage & Home Loan Calculator
- Inputs
- Price, down payment, rate, term, optional ownership costs and extra payments
- Output
- Principal-and-interest payment, estimated total monthly cost, payoff date, amortization
- Watch
- Optional costs are user-entered estimates; closing costs, changing escrow, and loan approval are not modeled.
Model recurring investing
SIP Calculator
- Inputs
- Monthly contribution, assumed annual return, term, optional yearly step-up
- Output
- Invested amount, illustrated future value, yearly growth, inflation-adjusted view
- Watch
- Contributions are modeled at the start of each month. The assumed return is not a forecast or guarantee.
Compound a lump sum or deposit
Compound Interest Calculator
- Inputs
- Principal, annual rate, term, compounding frequency, optional per-period deposit
- Output
- Maturity value, interest earned, effective yield, growth schedule
- Watch
- Deposits are added at the end of each compounding period; tax, fees, inflation, and changing rates are excluded.
Add or extract consumption tax
GST Calculator
- Inputs
- Tax system, amount, rate, add or remove direction
- Output
- Base, tax, total, and India CGST/SGST split where selected
- Watch
- Presets are arithmetic shortcuts, not product classification or filing advice. Verify the current rate and place-of-supply treatment.
Check a discount
Discount Calculator
- Inputs
- Original or sale price, discount, optional second discount and tax
- Output
- Final price, savings, effective stacked discount, optional taxed total
- Watch
- Stacked percentages multiply. Checkout order and tax treatment can differ by retailer and jurisdiction.
Set price or break-even volume
Margin, Markup & Break-even Calculator
- Inputs
- Cost, price, target percentage, fixed and variable costs, optional fees
- Output
- Profit, margin, markup, target price, break-even units and scenarios
- Watch
- Margin uses revenue; markup uses cost. Missing landed costs or platform fees will overstate profit.
Prepare a customer invoice
Invoice Generator
- Inputs
- Parties, dates, line items, discounts, tax, notes and payment details
- Output
- Printable invoice and browser-saved working draft
- Watch
- It does not validate tax IDs, create an IRN, file a return, or guarantee legal compliance in any jurisdiction.
Practical workflows
Use several estimates without turning them into a recommendation
Each workflow separates calculator arithmetic from the provider, market, tax, or legal details that must be checked elsewhere.
- 1
Compare two loan offers by holding principal and term constant, then reviewing EMI, total interest, fees, and prepayment terms separately.
- 2
Build a property-loan estimate from principal and interest, then add current tax, insurance, PMI, maintenance, and closing-cost information from real documents.
- 3
Run recurring-investment scenarios at more than one assumed return and review nominal growth alongside inflation-adjusted purchasing power.
- 4
Set a margin-safe price from complete unit costs, test discounts, apply the correct tax treatment, and confirm break-even volume before issuing an invoice.
- 5
Review every generated invoice for party details, numbering, tax classification, mandatory fields, payment terms, and jurisdiction-specific requirements.
Start here
Compare two loan offers
Compare like with like before deciding whether a lower payment is actually the lower-cost offer.
- 01Enter the same principal and tenure for both quotes in EMI Calculator.
- 02Compare the monthly EMI and total interest, not only the annual rate.
- 03Record processing fees, insurance, penalties, and rate type separately.
- 04Re-run only the variable that differs, then compare the lender's written quote with the estimate.
02
Evaluate a home loan
Build the monthly ownership view around the loan rather than stopping at principal and interest.
- 1Enter price, down payment, rate, term, and start date.
- 2Add realistic monthly tax, insurance, PMI, or maintenance estimates where relevant.
- 3Test extra payments and confirm the lender applies them to principal without a penalty.
03
Plan recurring contributions
Use several assumptions so one optimistic return does not masquerade as a plan.
- 1Enter a contribution you can maintain and a realistic time horizon.
- 2Run conservative, middle, and higher return assumptions.
- 3Review the inflation-adjusted view and account for fees and taxes separately.
04
Price a product or service
Work from landed cost to customer price in the order the transaction actually happens.
- 1Include variable cost, shipping, packaging, and transaction fees.
- 2Choose a margin target deliberately instead of substituting markup.
- 3Apply discounts and tax in the correct order, then review contribution and break-even volume.
05
Prepare and verify an invoice
Use the generator for arithmetic and presentation, then verify the legal and tax details that depend on your business.
- 1Add accurate party details, dates, line items, discounts, and payment terms.
- 2Confirm the tax rate, tax split, numbering, and mandatory fields for the jurisdiction.
- 3Review the printable preview and save the final PDF with your own records.
Before relying on a result
A financial assumptions checklist
Use the right time unit
Loan rates are entered annually and converted to monthly rates. SIP contributions are monthly; compound-interest deposits follow the selected frequency.
Keep timing explicit
SIP contributions are modeled at the start of the month, while compound-interest deposits are added at the end of each period.
List costs outside the formula
Lender fees, investment charges, taxes, inflation, closing costs, and changing insurance or escrow values are not automatically inferred.
Treat a chosen return as an assumption
A smooth annual return illustrates arithmetic. Market-linked outcomes vary and may be negative, even when a long-term average looks reasonable.
Verify jurisdiction-specific rules
Tax rates, product classification, invoice fields, rounding, and consumer-pricing rules can change by place and date.
Terms that change the result
Four distinctions worth checking
- EMI and amortization
- EMI is the scheduled periodic payment. Amortization is the changing split between interest and principal across those payments.
- Nominal and effective rate
- A nominal annual rate states the quoted rate; the effective annual yield reflects how often that rate compounds.
- Margin and markup
- Both use the same profit. Margin divides it by selling price; markup divides it by cost, so the percentages are not interchangeable.
- Tax-exclusive and tax-inclusive
- Exclusive pricing adds tax to a base. Inclusive pricing already contains tax, so the base must be found by division rather than simple subtraction.
What these tools cannot guarantee
They cannot guarantee loan eligibility, lender terms, savings, investment returns, tax treatment, product profitability, or invoice compliance. They also do not update a bank, accounting system, tax portal, or live business record. Use them to prepare and compare assumptions, then verify the decision in the system and documents that govern it.
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