Business Finance Calculators
Free calculators for investment appraisal, profitability, loan modelling, and financial planning. All calculations run in your browser — no data is stored.
Who these calculators are for
Business finance calculators on this page are designed for founders, finance managers, operations leaders, and business analysts who need quick, accurate answers to planning questions without opening a spreadsheet. They are especially useful for:
- →SME owners evaluating whether a new investment or loan is financially viable
- →Finance teams preparing board-level reporting or budget presentations
- →Operations managers benchmarking equipment finance or capex proposals
- →Startups modelling break-even, runway, or unit economics for investor decks
- →Procurement and sales teams working out margins, markups, and discounts in real time
Finance calculators
ROI Calculator
Calculate return on investment as a percentage. Input your investment cost and net profit to benchmark a project, campaign, or asset purchase against other opportunities.
Use when: Before committing budget to marketing, equipment, or expansion.
NPV Calculator
Net present value discounts future cash flows back to today's value using your required rate of return. A positive NPV means the investment adds value; a negative NPV means it destroys it.
Use when: Evaluating capital projects, lease vs buy decisions, or multi-year contracts.
IRR Calculator
Internal rate of return finds the discount rate at which the NPV of a series of cash flows equals zero. Use it to compare investments with different sizes and timelines on a level playing field.
Use when: Comparing two or more investment options with uneven cash flow profiles.
Break-Even Calculator
Find the unit volume or revenue level at which total revenues equal total costs. Uses the contribution margin method: Fixed Costs ÷ (Price − Variable Cost per Unit).
Use when: Pricing a new product, validating a business model, or planning a launch.
Business Loan Calculator
Calculate monthly repayments, total interest paid, and total cost of a business loan. Supports variable loan amounts, interest rates, and repayment terms from 12 to 120 months.
Use when: Assessing affordability of a term loan, equipment finance, or expansion debt.
Working Capital Calculator
Working capital is current assets minus current liabilities — the measure of short-term liquidity. This calculator also computes the current ratio and flags whether working capital is healthy.
Use when: Monthly financial reviews, due diligence preparation, or loan applications.
Payback Period Calculator
Calculates how many months or years it takes to recover an initial investment from net cash inflows. Simple payback is a useful first filter before committing to a full DCF analysis.
Use when: Quick-screening capital expenditure proposals or equipment purchases.
Depreciation Calculator
Straight-line depreciation spreads the cost of an asset evenly over its useful life. Enter purchase cost, salvage value, and useful life to get annual depreciation and a full schedule.
Use when: Budgeting for asset replacement, preparing accounts, or modelling cash flow.
Gross Margin Calculator
Calculate gross margin percentage from revenue and cost of goods sold. Gross margin is the first profitability metric reviewed in any business — it tells you how much is left to cover overheads.
Use when: Pricing products, reviewing product-line profitability, or preparing investor reports.
Markup Calculator
Markup is the percentage added to cost to arrive at selling price. This calculator converts between cost, markup %, and selling price — and between markup and margin so you don't confuse the two.
Use when: Setting wholesale prices, trade discounts, or reseller margins.
Discount Calculator
Calculate the final price after a percentage discount, the original price before a discount, or the discount amount from two prices. Useful for sales pricing and negotiation.
Use when: Trade promotions, bulk pricing, or quick mental-check on a discount offer.
Commission Calculator
Calculate commission earned from a sale value and commission rate. Supports tiered commission structures and shows gross earnings before tax.
Use when: Sales compensation planning, freelancer fee estimates, or agent agreements.
Using finance calculators as a workflow
Finance decisions rarely rest on a single number. A well-structured investment appraisal typically involves several of these calculators in sequence:
- Use the Break-Even Calculator to establish the minimum viable volume or revenue level for the project.
- Run the ROI Calculator for a simple, fast check on whether expected returns justify the upfront cost.
- If the project has multi-year cash flows, use the NPV Calculator to account for the time value of money.
- Use the IRR Calculator to compare this project's return rate against your cost of capital or alternative investments.
- If funding is required, use the Business Loan Calculator to model repayment obligations and assess debt serviceability.
- Use the Payback Period Calculator as a final risk filter — shorter payback reduces downside exposure.
Responsible use
These calculators use simplified inputs and standard formulas. They do not account for tax effects on cash flows, complex depreciation schedules, or step-changes in fixed costs at volume thresholds. Results are suitable for planning and orientation — not for board-level investment approval, covenant calculations, or statutory reporting. For those uses, verify results with a qualified accountant or financial adviser.