Free UK Gross Profit Calculator

How does this Gross Profit Calculator work?

Understanding your gross profit margin is one of the most important metrics for running a healthy, growing UK business. It tells you exactly how much of every pound you earn is left over after paying for the direct costs required to deliver your product or service.

Our free calculator works out two essential figures for your business:

1. Gross Profit (£) This is the raw cash left over from a sale after deducting your direct costs. The formula is simple: Total Revenue – Cost of Goods Sold (COGS) = Gross Profit

• Example: If you sell a bespoke wooden dining table for £1,000, and the timber, varnish, and direct labour cost you £400, your Gross Profit is £600.

2. Gross Profit Margin (%) This expresses your gross profit as a percentage of your total sales. This is the crucial number investors and accountants look at to determine how efficiently your business runs. The formula is: (Gross Profit ÷ Total Revenue) × 100 = Gross Margin %

• Example: Using the table above (£600 profit ÷ £1,000 revenue) × 100 = a 60% Gross Profit Margin. This means you keep 60p of every £1 you make to cover your overheads and generate net profit.

Note: Cost of Goods Sold (COGS) only includes direct costs (raw materials, direct labour, freight). It does not include indirect overheads like your office rent, marketing budget, or software subscriptions.

Margin vs. Markup: What is the difference?

This is the number one pricing mistake small business owners make. Many people use the terms "margin" and "markup" interchangeably, but they produce completely different results and can severely damage your profitability if confused.

• Margin is based on your Selling Price. (Profit ÷ Revenue)

• Markup is based on your Cost Price. (Profit ÷ Cost)

Here is why it matters: Let's say you buy a product for £100. You want to make a 30% profit margin, so you add a 30% markup and sell it for £130.

You just made £30 profit. However, your actual gross margin on a £130 sale with £100 costs is only 23%, not the 30% you expected.

If you want a true 30% gross profit margin on an item that costs £100, you have to sell it for £142.86. Use the "Find Sales Price" tab on our calculator above to ensure you are setting your prices correctly to hit your target margins!

How to improve your Gross Profit Margin

If your margins are too low, your business will constantly struggle for cash flow, no matter how much revenue you bring in. You can only improve your margin by pulling two levers:

• Decrease your COGS: Can you negotiate better rates with your suppliers? Can you buy raw materials in bulk? Can you streamline your production process to reduce direct labour hours?

• Increase your prices: This is often the fastest way to improve your margin. Use our calculator to determine the exact price increase needed to hit a healthier target margin.

Stop guessing your profitability. Running a successful business requires knowing your numbers inside and out. Zippy Invoices makes it effortless for UK sole traders and small businesses to track revenue, manage clients, and get paid faster. Stop wrestling with messy spreadsheets and start billing like a professional.