Self-Employed & Business
Calculators and tools for sole traders, freelancers, contractors and limited company directors — work out self-employment tax, National Insurance, Self Assessment payments and allowable expenses on 2026/27 UK rates.
- Bank Statement Converter (PDF to Excel)A bank statement converter turns a PDF bank statement into a clean spreadsheet of transactions - date, description, money in, money out and balance - that you can sort, total and import into your bookkeeping. Instead of retyping months of entries by hand, you upload the PDF and get a CSV or Excel file back in seconds. It is built for UK sole traders, landlords, contractors and small limited companies who need their bank data in a usable format for Self Assessment, VAT returns or Making Tax Digital - free, with no account to set up.
- Break Even CalculatorThis break even calculator tells you exactly how many units you need to sell, or how much revenue you need to take, before your business stops losing money and starts making a profit. Enter your fixed costs, your selling price and the variable cost of making each sale, and you get your break-even point in seconds. It is built for UK sole traders, freelancers and small limited companies pricing a product or service, planning a launch, or sense-checking whether a new line will ever pay its way.
- CIS Tax CalculatorUse our free CIS Tax Calculator to get an instant estimate for the 2026/27 tax year.
- Capital Allowances CalculatorUse our free Capital Allowances Calculator to get an instant estimate for the 2026/27 tax year.
- Cash Flow ForecastThis cash flow forecast calculator projects your business bank balance month by month, so you can see exactly when money gets tight before it actually does. You enter your opening balance, the cash you expect in, and the cash you expect out, and it rolls the closing balance forward across the year. It is built for UK sole traders, freelancers and small limited companies who want a simple 12 month cash flow forecast without wrestling with a spreadsheet. Profit on paper means little if the bank runs dry in month four. This tool shows you the months to plan for.
- Contractor CalculatorUse our free Contractor Calculator to get an instant estimate for the 2026/27 tax year.
- Contractor Day Rate CalculatorUse our free Contractor Day Rate Calculator to get an instant estimate for the 2026/27 tax year.
- Corporation Tax CalculatorThis corporation tax calculator estimates what your UK limited company owes HMRC on its taxable profits for the 2026/27 financial year, including the effect of marginal relief if your profits sit between the lower and upper limits. Enter your profit and the tool does the rest. It is built for company directors, contractors running a personal service company and small business owners who want a quick, honest figure before the accountant's bill lands. It applies the current rates and limits published by HMRC so you can plan cash flow with confidence.
- Dividend Voucher GeneratorThis free dividend voucher generator creates a clean, ready-to-keep dividend voucher PDF for your limited company in seconds. Enter the company, shareholder, shares held and dividend amount declared to produce a professional record you can store with your company books. A dividend voucher documents each dividend payment to shareholders and is an important part of your company's records. There is no signup and you can generate unlimited vouchers whenever you declare a dividend.
- Flat Rate VAT CalculatorThis flat rate VAT calculator works out what you would hand to HMRC under the VAT Flat Rate Scheme and lines it up against standard VAT accounting, so you can see at a glance which method leaves more in your business. It is built for sole traders, freelancers and small limited companies on (or thinking about joining) the scheme in the 2026/27 tax year. Enter your VAT-inclusive turnover and your sector's flat rate percentage, and you will get a clear figure plus the comparison that actually matters: the cash difference between the two ways of paying.
- Free Expense TrackerThis free expense tracker lets you log every business cost, total it instantly and keep the figures saved privately in your own browser. It is built for sole traders, freelancers and small limited company owners who want a simple, no-sign-up way to keep on top of spending before Self Assessment season arrives. Type in each expense, pick a category, and the tool keeps a running total you can export to CSV whenever you need it. Nothing is uploaded to a server, so your numbers stay on your device.
- Free Invoice GeneratorThis free invoice generator lets you create a clean, professional UK invoice and download it as a PDF in a couple of minutes, with no sign-up and no watermark. Fill in your details, add your line items, set VAT if you charge it, and the tool builds a properly laid-out document you can send straight to your client. It is built for sole traders, freelancers, contractors and small businesses who want to look the part and get paid faster.
- Free Purchase Order GeneratorThis free purchase order generator lets you create and download a professional purchase order (PO) as a PDF in a couple of minutes, with no sign-up and no watermark. Fill in your business details, the supplier, the line items and any VAT, and the tool builds a clean, numbered document you can email straight away. It is built for UK sole traders, freelancers and small limited companies who need to raise a formal order, agree a price in writing and keep a clear paper trail before money changes hands.
- Free Quote GeneratorThis free quote generator lets you build a clean, professional quotation and download it as a PDF in a couple of minutes, with no sign-up and no watermark. Add your business details, the work you're pricing, your day rate or line items, and an expiry date, then send it straight to the client. It's made for UK sole traders, freelancers, tradespeople and small limited companies who need a tidy estimate that wins the job and stands up later if a price is questioned. Fill in the form above and your quote is ready to share.
- Freelancer Tax Health ScoreYour freelancer tax health score is a fast way to see whether your self-employment finances are genuinely under control, or quietly heading for a January scramble. Rather than guessing, the tool above scores how ready you are across the things HMRC actually cares about: being registered, keeping records, putting money aside, and hitting deadlines. It is built for UK sole traders, side-hustlers and freelancers who file a Self Assessment return and want a plain checklist of what to fix next.
- IR35 Status CheckerThis IR35 calculator helps you check whether a contract is likely to fall inside or outside IR35 (the off-payroll working rules) by walking through the working practices HMRC actually looks at. It is built for UK limited-company contractors, freelancers and the clients who engage them, and gives you a plain-English read on your status before money or deadlines are on the line. IR35 decides whether HMRC treats you as genuinely in business on your own account, or as a "disguised employee" who should be taxed almost like an employee. Get it wrong and the bill, plus interest and penalties, can be severe.
- Late Payment Interest CalculatorThis late payment interest calculator works out the statutory interest you are legally entitled to charge on an overdue business invoice under the Late Payment of Commercial Debts Act. Enter the invoice amount and the dates to get the interest owed plus the fixed compensation you can add on top. Statutory interest runs at 8% above the Bank of England base rate, and you can also claim between £40 and £100 in compensation per invoice depending on its size. The calculator applies the current base rate and shows the daily interest so you can watch it grow until you are paid.
- Limited Company Tax CalculatorUse our free Limited Company Tax Calculator to get an instant estimate for the 2026/27 tax year.
- MTD Income Tax Scope CheckerThis Making Tax Digital scope checker tells you, in seconds, whether MTD for Income Tax applies to you and from which tax year, based on your self-employment and property income. Rather than wading through HMRC guidance, simply enter your figures and let the tool do the work. Making Tax Digital for Income Tax is being phased in from April 2026, 2027 and 2028 depending on your total qualifying income, so knowing exactly when you are caught helps you prepare for digital record-keeping and quarterly updates well ahead of your start date.
- MTD Quarterly Record OrganiserThis MTD quarterly record organiser is a free, no-signup tool to keep digital records for Making Tax Digital. Log your income and expenses as they happen and the organiser groups everything into the four quarterly periods you need to report to HMRC. Get your four quarterly summaries automatically, see a running year total, and export to CSV whenever you need it. Your data saves in your browser, so you can keep your books tidy throughout the year and stay ready for each submission deadline.
- MTD for Income Tax Checker & Deadline TrackerUse the checker above to see whether Making Tax Digital for Income Tax applies to you and when, based on your self-employment and property income.
- Markup CalculatorThis markup calculator turns a cost price and a markup percentage into a selling price, the cash profit you keep and the profit margin behind it. Type in what an item costs you and the markup you want to add, and it does the arithmetic so you can price with confidence. It is built for UK sole traders, shop owners, makers, tradespeople and anyone quoting jobs who needs a quick, reliable price without second-guessing the maths or confusing markup with margin.
- Mileage Tracker & ClaimThis mileage tracker turns your business journeys into a tax-free claim using HMRC's Approved Mileage Allowance Payment (AMAP) rates of 45p and 25p a mile. Log your miles, pick your vehicle, and see exactly what you can deduct from your profits or reclaim from your employer. It's built for sole traders, freelancers, contractors, landlords and employees who drive their own car, van, motorbike or bike for work. Whether you're filing a Self Assessment return or claiming mileage allowance relief through PAYE, the maths is the same - and most people undercount.
- P11D GeneratorOur free P11D generator creates a clear PDF listing an employee's taxable benefits in kind and the total cash equivalent, plus the employer Class 1A NIC. Enter company car, fuel, medical insurance, loans and other expenses and benefits to build the figures you need for reporting. Everything runs in your browser with no signup, so you can quickly produce a P11D for each employee and keep an accurate record of the benefits provided during the tax year.
- Payments on Account CalculatorOur payments on account calculator helps you work out whether you owe Self Assessment payments on account, how much each one is and when they're due. Payments on account are advance contributions towards your next Self Assessment tax bill, spreading the cost so you don't face one large lump sum. Enter your figures to check whether HMRC expects these advance payments from you, plan ahead for each instalment and avoid surprise demands or interest charges when your return is filed.
- Payroll CalculatorUse our free Payroll Calculator to get an instant estimate for the 2026/27 tax year.
- Profit & Loss StatementThis profit and loss calculator turns your sales, costs and overheads into a clear P&L statement in seconds, showing gross profit, net profit and the margins behind them. It is built for UK sole traders, freelancers and small limited companies who want to know whether the business is actually making money before the accountant confirms it. Enter your figures above, and you get a tidy summary you can sanity-check against your bookkeeping, your bank balance and your tax return. No jargon, no spreadsheet formulas to remember.
- Profit Margin CalculatorUse our free Profit Margin Calculator to get an instant estimate.
- R&D Tax Credit CalculatorThis R&D tax credit calculator helps UK limited companies estimate the qualifying spend behind a Research & Development claim and the rough cash benefit it could unlock against their corporation tax bill. If you have staff, subcontractors or cloud costs tied to solving a genuine technical problem, you may have a claim and not realise it. It is built for company directors, finance leads and accountants who want a quick, honest sense of scale before committing to the full HMRC paperwork for the 2026/27 accounting period.
- Receipt Scanner (OCR)This free receipt scanner app reads a photo or PDF of any UK receipt and pulls out the four things that matter for your books: the supplier, the date, the total and the VAT. Drop in a crumpled lunch receipt, a fuel station printout or a supplier invoice, and the optical character recognition (OCR) does the typing for you. It is built for sole traders, freelancers and small limited companies who need to scan receipts for tax without paying for bookkeeping software. Nothing here is a rate that changes each April, so it works the same in every tax year.
- Salary vs Dividend CalculatorUse the dividend vs salary calculator above to compare how much tax you pay taking income as salary versus dividends, and find the most efficient split for a company director in 2026/27.
- Side Hustle Tax CalculatorUse the side hustle tax calculator above to work out the tax on income from a side project alongside your main job, and whether the £1,000 trading allowance covers you.
- Umbrella Company CalculatorUse our free Umbrella Company Calculator to get an instant estimate for the 2026/27 tax year.
- Use of Home as Office CalculatorSelf-employed and working from home? Compare HMRC's simplified flat rate with claiming a share of your actual household costs, and see which gives the bigger deduction.
- Director's Loan CalculatorIf you take money out of your company beyond your salary, dividends or expenses, it goes on your director's loan account . This calculator works out the S455 tax on an overdrawn loan and the benefit-in-kind cost when the loan is over £10,000.
- Self-Employed Expenses CheckerHMRC does not send a list of what you could have claimed. Pick your trade above, mark what you already claim, and see what the gaps cost you in real tax, then start keeping the evidence that turns them into savings.
- PAYE vs Self-Employed CalculatorEarning the same money as a salary or as self-employed profit leaves you with different take-home pay - mostly because of National Insurance. This calculator compares both side by side for 2026/27, so you can see the real difference.
Run the numbers on your business
Working for yourself means wearing the finance hat too. Whether you are a sole trader, a contractor or a limited company director, our business calculators help you price work, plan for tax and take money out of your company in the most efficient way.
Limited company owners can estimate their bill with the Corporation Tax Calculator and Limited Company Tax Calculator, then decide how to pay themselves using the Salary vs Dividend Calculator. Contractors can compare working structures with the Contractor Calculator, Umbrella Company Calculator and Day Rate Calculator.
Price, profit and cash flow
Getting your pricing right is the difference between a busy business and a profitable one. The Profit Margin Calculator and Markup Calculator help you set rates that actually make money, while the Break-Even Calculator shows how much you need to sell to cover your costs.
In the construction sector? The CIS Tax Calculator works out deductions under the Construction Industry Scheme. Chasing invoices? The Late Payment Interest Calculator shows the statutory interest you are entitled to charge. Every tool is free and updated for the current tax year.
Other calculator categories
All calculators →Software that files it for you
Partner linksIf you keep your own books, these are the packages that handle Self Assessment and Making Tax Digital.
FreeAgent
Free optionMTD ready
The freelancer and contractor favourite, free with some bank accounts.
- Free forever with a NatWest, Royal Bank of Scotland, Ulster or Mettle business account
- Built-in Self Assessment and MTD for Income Tax filing
From £0 with a NatWest, RBS or Mettle account, otherwise about £19/mo
See FreeAgentQuickBooks
MTD ready
The big all-rounder with the deepest MTD track record.
- Sole Trader plan built specifically for Self Assessment and MTD
- Snap and store receipts, automatic bank feeds
From about £10/mo, frequent 90% off intro offers
See QuickBooksXero
MTD ready
The scale-up choice once you have staff, stock or VAT.
- Huge app marketplace and the accountant industry standard
- Strong for VAT, payroll and multi-user limited companies
From about £15/mo
See XeroWe may earn a commission if you sign up through one of these links. It never changes what we calculate, what we recommend, or the order they appear in.
Deadlines, rate changes and what to claim
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