Everyday and small-business math, done right: sales tax, margins, discounts, commissions, depreciation, college costs, percentages and counting cash.
Business & Everyday Tools calculators (16)
- Sales Tax Calculator
- VAT Calculator
- Depreciation Calculator
- Margin Calculator
- Discount Calculator
- Commission Calculator
- College Cost Calculator
- Percentage Calculator
- Cash Counter (Denomination Breakdown)
- Pence to Pounds Converter
- Fibonacci Retracement Calculator
- Pivot Point Calculator
- Relative Strength Index Calculator (RSI)
- Combined Ratio Calculator
- Loss Ratio Calculator
- Customer Retention Value Calculator
About Business & Everyday Tools calculators
These tools cover calculations that come up in shopping, selling and running a business. The sales tax calculator uses state base rates plus your local rate. The margin and discount calculators help with pricing, and the commission calculator handles flat, tiered and per-unit plans.
The depreciation calculator builds schedules for business assets, the college cost calculator projects future tuition and savings needs, and the percentage and cash counter tools handle quick everyday math.
Chart and risk tools include Fibonacci retracement, pivot points, RSI, and the insurance combined and loss ratios.
Everyday business math
These tools handle calculations that come up in shopping, pricing and small business. The sales tax calculator adds or removes US sales tax by state, and the VAT calculator does the same for value added tax.
Pricing and profit
Margin and markup are often confused. Margin is profit as a share of the selling price, markup is profit as a share of cost. Use the ROI and profit margin calculator for return and margin.
Related planning
For longer-term decisions, see the loan calculator for financing equipment or the budget calculator for cash flow.
What you can calculate
- Sales Tax Calculator: Add or remove US sales tax using state base rates plus local tax, with discounts and quantities.
- VAT Calculator: Add or remove VAT from any price and see the net, VAT and gross amounts.
- Depreciation Calculator: Calculate depreciation by straight-line, declining-balance or sum-of-the-years-digits with a full schedule.
- Margin Calculator: Calculate gross margin, markup, cost, price and profit from any two values.
- Discount Calculator: Find the sale price or discount percentage, with stacked discounts, coupons, tax and quantity.
- Commission Calculator: Calculate commission with flat, tiered or per-unit rates, bonuses, a base salary and a target income.
- College Cost Calculator: Project the total future cost of college and the monthly saving needed to cover it.
- Percentage Calculator: Calculate percentages, percentage change, and percentage difference quickly.
- Cash Counter (Denomination Breakdown): Break any amount of money into the exact number of notes and coins needed.
- Pence to Pounds Converter: Convert pence to pounds or pounds to pence.
- Fibonacci Retracement Calculator: Compute Fibonacci retracement levels between a swing high and low.
- Pivot Point Calculator: Compute classic pivot points with support and resistance levels.
- Relative Strength Index Calculator (RSI): Compute RSI from average gains and losses.
- Combined Ratio Calculator: Compute an insurer’s combined ratio from loss and expense ratios.
- Loss Ratio Calculator: Compute an insurer’s loss ratio.
- Customer Retention Value Calculator: Value an increase in retention for a subscription business.
Frequently asked questions
Are the results exact?
They follow the stated formulas exactly. Real-world fees, taxes and rounding may differ slightly.
Can I use these for business?
Yes for quick estimates, but confirm official figures with your accountant.
What is the difference between margin and markup?
Margin is profit divided by the selling price. Markup is profit divided by cost. A 50% markup equals a 33% margin.
Can I rely on these for tax filing?
No. Use them for estimates and quick checks. For filings, use official forms and guidance or a professional.