Calculate VAT, net sales value, profit and margin so you can see what belongs to HMRC, what covers costs and what is actually left from the sale.
Tax & Income
Use this UK VAT and profit calculator to separate VAT, net sales value, direct costs and retained profit before you quote, discount or accept work. Enter your selling price, VAT rate and costs to check whether the margin is strong enough after tax and expenses are removed.
Decision one
If the price is VAT-inclusive, part of the customer payment may need to be passed on as VAT. That means the bank receipt can look larger than the real sale value available to cover costs and profit.
Use the calculator to split gross price from net revenue before judging whether the sale, job or quote is commercially worthwhile.
Decision two
Profit is often overstated because small costs are ignored. Payment processing fees, postage, packaging, marketplace fees, fuel, materials, subcontractors and returns can all reduce the true margin.
If a cost regularly appears when the sale is completed, it belongs in the calculation even if the amount looks minor by itself.
Decision three
The result can show whether the issue is VAT treatment, cost control or underpricing. A small increase in price can sometimes protect the margin better than trying to cut costs that are already necessary.
Before discounting, test the reduced price. A discount that wins more work can still weaken the business if each sale leaves too little after VAT and costs.
Before you calculate
VAT can make business income look healthier than it is because the customer payment may include money collected on behalf of HMRC. If that VAT is mentally treated as profit, pricing decisions become distorted. A sale can appear successful because cash arrived, while the true margin is much thinner once VAT and costs are removed.
Start by deciding whether the price entered is VAT-inclusive or VAT-exclusive. This matters because consumer prices and business-to-business quotes are often presented differently. A consumer usually cares about the final amount paid, while a VAT-registered business may focus on the net amount and VAT separately.
Next, include costs that genuinely belong to the sale or job. For a product, that may include stock, packaging, delivery, marketplace fees and card processing. For a service, it may include materials, subcontractors, travel, software and any specific purchase needed to complete the work.
Owner time is another common blind spot. A job may leave some accounting profit after VAT and materials, but still be poor if it takes several hours and stops you accepting better work. If time is scarce, the margin needs to justify the effort as well as the direct costs.
The calculator is most useful before you commit to a price. Once a quote has been accepted, the result is mostly a lesson. Before the quote is accepted, it can guide price, scope, negotiation and whether the work should be declined.
Calculator
Enter the VAT rate, sale price and cost figures. The result separates VAT, net sale value, profit and margin using the existing calculator logic.
Use the figures that match the sale, product or project you want to test.
Your VAT, net revenue and profit estimate updates from the figures entered.
Estimated retained profit after VAT treatment and costs.
Break-even excluding VAT is —. Break-even including VAT is —. Read these alongside the margin, not as a reason to price at break-even.
After you calculate
The result separates the customer price from the amount that may be VAT, the net sale value, the costs and the profit left afterwards. The most important figure is not the headline sale value. It is the retained profit and margin after everything that must be paid out has been allowed for.
If the profit looks weak, check whether the issue is price, VAT treatment or costs. A VAT-inclusive consumer price can leave less net revenue than expected. A job with a strong net price can still be poor if direct costs or time requirements are too high.
Use the output before accepting work, not only afterwards. Once the sale has gone through, the result is only a lesson. Before the quote is accepted, it can still guide price, scope and whether the work is worth taking.
The biggest lever is usually price, followed by direct costs. VAT treatment changes the way the customer price is split, but it does not turn VAT collected into profit. Discounts can be especially damaging because they reduce the amount available to cover costs while many costs stay fixed.
Do not treat VAT-inclusive income as profit. Do not ignore payment fees, postage, materials or platform costs. Do not price a job without allowing for your own time. Do not use a discount to win work if the reduced price leaves too little margin. Do not forget that VAT cash may need to be reserved rather than spent.
If the margin is acceptable, keep the VAT reserve separate and make sure the price still covers future costs. If the margin is weak, change one assumption at a time: raise the price, reduce scope, negotiate costs, or reject the work. A busy business can still be financially poor if the jobs it accepts are underpriced.
Compare next
The calculator result should influence the quote, not just explain the outcome later. Compare the sale under a normal price, a cautious cost assumption and any discount you are considering.
Consumer-facing prices often include VAT, while business quotes may show net and VAT separately. The margin can look different depending on how the price is presented.
Revenue growth is useful only if enough profit remains after VAT and costs. A larger sale is not automatically a better sale.
Reducing scope can protect margin better than cutting price. If a customer wants a lower price, test whether the work should also be reduced.
Practical guidance
A simple pricing rule can prevent many mistakes: separate VAT first, subtract costs second, then decide whether the remaining profit properly rewards the work. If the answer is no, the quote needs attention before the customer says yes.
For recurring products or services, keep a record of actual costs after each sale. Real costs often drift over time. When postage, materials, software or supplier prices rise, a margin that used to be healthy can become weak without the selling price changing.
FAQ
No. VAT collected from customers may need to be paid to HMRC. It should be separated before judging profit or cash available to spend.
Use the option that matches the price you are testing. Consumer prices are often VAT-inclusive, while business quotes may be shown before VAT.
Include direct costs such as materials, delivery, marketplace fees, payment processing, subcontractors and any purchase needed to complete the sale.
No. It is a pricing and margin estimate. You still need proper records for VAT returns, accounts and tax reporting.
If VAT does not apply, use a zero VAT rate or treat the result as a profit-only estimate. Check registration rules if turnover is close to the threshold.
A discount reduces revenue, but many costs stay the same. That means a small price cut can remove a large part of the remaining profit.
Last updated: