Free tools for business owners

These calculators, checks, scorecards and reference pages answer the questions we are asked most. Most give the answer on the page. The scorecards send you a written report, so they ask for an email address.

Take the 60-second check Book a call

What is here

Fifteen calculators, answers on the page
A 60-second business check
Scorecards with a written report
Key tax dates for 2026/27
A plain-English glossary
Free to use

See your monthly fee

Business checks

Is your accountant working for you?

Eighteen questions across the six things an accountant is paid to do, and what to ask yours about the ones that score low.

Take the scorecard

The 60-second business check

Answer three questions for a result on the page, and a written breakdown by email if you want one.

Take the check

Know your numbers score

Ten questions on what you can see in your business each month, scored on the page.

Score yourself

Northern Ireland goods rules check

Three questions that tell an NI business whether the Windsor Framework applies to it.

Check the rules

Am I in Making Tax Digital?

Shows who is in, from when, and what changes for sole traders and landlords.

Use the checker

Calculators

Each calculator uses the current tax year's rates and thresholds, with the source on the page.

VAT calculator

Add or strip VAT from a figure, and see where the registration threshold leaves you.

Open

Self-employed tax calculator

Income tax and National Insurance on sole trader profits, and what to set aside.

Open

Salary and dividend calculator

The split between salary and dividends that leaves most in a director's pocket.

Open

Take-home pay calculator

What a salary is worth after tax, National Insurance and pension.

Open

Corporation Tax calculator

The tax on a company's profit, including marginal relief between the two rates.

Open

Cost of a hire calculator

What a salary really costs once employer's National Insurance, pension and kit go on top.

Open

Salary sacrifice calculator

What an employee and an employer each save when pension contributions go through salary sacrifice.

Open

IR35 calculator

The difference a contract being inside or outside IR35 makes to what you keep.

Open

Capital gains calculator

The tax on selling an asset, with the annual exempt amount taken into account.

Open

Capital allowances calculator

What buying equipment does to the tax bill, and when.

Open

R&D tax credit calculator

A first estimate of what qualifying research and development spend could be worth.

Open

Stamp duty calculator

Stamp Duty Land Tax on a purchase, including the additional-property rates.

Open

Business rates calculator

The rates bill on a premises from its rateable value, with small business relief.

Open

Import duty calculator

Duty and import VAT on goods brought into the UK.

Open

Know your numbers score

Ten questions on how much of your business's figures you can see each month.

Open

Scorecards from Buzz Coaching

Each one takes a few minutes. You get a written report by email, with the scores and what to look at first, and the offer of a free debrief call with a coach to talk it through.

Financial Performance Scorecard

How well the owner understands and runs the numbers, and plans and funds growth.

Start

Business Performance Scorecard

How the business grows: strategy, marketing, operations, team, customers and profit.

Start

Leadership Performance Scorecard

How you manage, develop and get results through others.

Start

Personal Performance Scorecard

How you think, decide and lead yourself.

Start

Profit Improvement Calculator

Enter five numbers: leads, conversion, purchases per customer, average sale and margin. See what a small improvement in each does to profit when they compound.

Start