Free accounting tools and calculators
Templates, tax calculators and the business calculators accountants reach for, built for UK rules and kept up to date. Use any of them without an account; when you want the work done for you, the same maths runs inside IQ Books and the ReconcileIQ products.
Templates that look like your business
Invoices, quotes, receipts and a bank reconciliation statement, filled in online and downloaded. Nothing you type leaves the page.
Invoice template
A UK invoice with your logo, VAT where it applies and the legal fields, as a PDF or Word file.
Pairs with IQ BooksOpen →Quote template
A quote or estimate with your terms and validity, ready to send to a customer.
Pairs with IQ BooksOpen →Receipt template
A receipt for a payment received, with VAT shown when you are registered.
Pairs with IQ BooksOpen →Profit and loss template
A profit and loss account for a company or sole trader, with margins, as Excel, CSV or PDF.
Pairs with IQ BooksOpen →Balance sheet template
A UK balance sheet for a company or sole trader that checks it balances, as Excel, CSV or PDF.
Pairs with IQ BooksOpen →Bank reconciliation template
A bank reconciliation statement you fill in online, then download as Excel, CSV or PDF.
Pairs with Bank ReconcilerOpen →Cash flow forecast template
A 12-month or 13-week cash flow forecast with VAT, PAYE and corporation tax on their real dates, as Excel.
Pairs with LedgerIQOpen →Tax calculators for the current tax year
UK rates for 2026/27 from gov.uk, with the workings shown line by line. Each one says which year it uses.
VAT calculator
Add or remove VAT at 20%, 5%, 0% or any rate, with the net, VAT and gross.
Pairs with IQ BooksOpen →Self-employed tax calculator
Income Tax and Class 4 National Insurance for 2025/26 and 2026/27, Scotland included.
Pairs with IQ BooksOpen →Corporation tax calculator
Corporation tax at 19% and 25% with marginal relief, associated companies and the deadlines.
Pairs with PrepIQOpen →Dividend tax calculator
Dividend tax for 2026/27 and 2025/26, and salary against dividends for a company director.
Pairs with IQ BooksOpen →Business calculators for the numbers behind the books
Margins, valuation and the ratios a lender or a buyer looks at, with the formulas and worked examples.
Profit margin calculator
Gross margin, markup and net margin from any two of cost, price, margin or markup.
Pairs with LedgerIQOpen →Business valuation calculator
Value a business four ways, earnings and revenue multiples, a DCF and net assets, as a range.
Pairs with LedgerIQOpen →Debtor days calculator
Debtor, creditor and inventory days and the cash conversion cycle, with the VAT adjustment.
Pairs with LedgerIQOpen →Gearing ratio calculator
Gearing on both definitions, debt to equity, current and quick ratios and interest cover.
Pairs with LedgerIQOpen →Break even calculator
The break-even point in units and sales, contribution margin, margin of safety and target profit.
Pairs with LedgerIQOpen →Depreciation calculator
Straight line or reducing balance depreciation as a year-by-year schedule, with capital allowances alongside.
Pairs with IQ BooksOpen →Making Tax Digital without a monthly fee
IQ Books files MTD VAT returns and MTD for Income Tax quarterly updates on its free plan.
Every calculator states the tax year it uses and cites its gov.uk source, and the templates follow HMRC's invoice and record-keeping rules. They are guides to the arithmetic, not advice; your accountant has the final word on your own figures.
When you would rather the work did itself: IQ Books keeps the books and files MTD returns, Bank Reconciler matches the bank, CodeIQ codes it, LedgerIQ reads the ledger and PrepIQ prepares the year end.
The same work, done for you.
IQ Books keeps a business’s books for free, with the bank coded and VAT and MTD filed; practices add the rest of ReconcileIQ for their clients.