Figure It Quick

Plain-English glossary

Invoice Basics Glossary

Use this glossary when checking a quote, invoice, discount, tax line or price calculation.

Use this with a printable

Turn the guide into a page you can fill in

Read the guide for context, then choose the printable that matches the job. The set keeps several pages together; the one-page planner is enough when you only need one sheet.

Work and freelance admin planner packUse this when invoice records belong with quotes, meeting notes and work admin. Invoice and Payment Record SheetUse this when the useful job is tracking invoice numbers, due dates and payment notes. Invoice Total CalculatorUse this when a subtotal, tax or total row needs a quick check.

What this glossary is for

Invoice totals depend on order. A discount before tax, a discount after tax and a tax-inclusive price can produce different results.

Key terms

Line item

One product, service or charge listed on an invoice.

Subtotal

The total before discounts, tax or extra fees are applied.

Discount

An amount removed from a price. It can be a fixed amount or a percentage.

Tax / VAT

An added or included tax amount depending on local rules and invoice format.

Invoice total

The final amount due after all lines, discounts, tax and fees are counted.

Markup

How much is added to cost to create a selling price.

Profit margin

Profit as a percentage of selling price, not cost.

How to use the terms

Read the definition first, then open the calculator that uses the same term. Change one input at a time so you can see which number drives the result.

Main related calculator

The first tool below is the most directly related calculator for this glossary. The remaining links stay within the same topic so the page does not send visitors into unrelated tools.

Invoice Total CalculatorCalculate subtotal, discount, tax and total.VAT CalculatorAdd or remove VAT from a price.Discount CalculatorCalculate sale price and saving.Profit Margin CalculatorCheck profit as a percentage of selling price.Markup CalculatorTurn cost and markup into selling price.

How to use this page

Pick the link or tool that matches the question you are trying to answer. Use one real example first, then open a related guide or worksheet only if you need more detail.

Keep it simple

You do not need every link on the page. Start with one result, change one important input if you want to compare options, and use the answer to choose your next step.

Useful next places

Decision guides can help when you know the question but not the tool. Number tools is there when you already know the calculation you need.

When this reference helps

Definitions for subtotal, discount, tax, VAT, invoice total, markup and margin. Use it when a word, formula or comparison is unclear before you fill in a planner or check a result. The point is to understand what the number includes, what it leaves out and why two answers can look different even when both are calculated correctly.

For a cleaner comparison, write down the unit, period and source of the number. For example, monthly and yearly figures should not be mixed, percentages need a clear base value, and health or finance estimates should be treated as planning notes rather than personal advice.

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