Tools and Calculators
Free UK business and home calculators built on verified data from HMRC, Ofgem, and provider websites. Get instant cost estimates, ROI projections, and savings breakdowns — no signup required.
For Your Business
Statutory Sick Pay Calculator UK 2026/27
Statutory Sick Pay changed significantly in April 2026: it is now paid from the first day of sickness, the three…
Maternity Pay Calculator UK 2026/27 (Employer Cost)
Maternity leave costs employers far less than most assume. Statutory Maternity Pay is largely reclaimed from HMRC, and smaller businesses…
HR Software Cost Calculator UK 2026 — Match Your Team
UK HR software for SMEs (1 to 50 employees) is usually priced per user per month, rising to £8 to…
Card Machine Comparison Tool UK 2026
The cheapest card machine depends on your monthly card turnover and average sale. Flat-rate providers like Square (1.75%) and SumUp…
Invoice Factoring Cost Calculator UK 2026
Invoice factoring charges a service fee for managing your sales ledger and a discount charge on the cash advanced until…
Salary Sacrifice Pension Calculator UK 2026/27
Salary sacrifice lowers the salary that National Insurance is charged on, so both employee and employer pay less NI. Only…
Redundancy Cost Calculator UK 2026/27
Statutory redundancy pay uses the employee's age, length of service and weekly pay, capped at £751 a week for 2026/27.…
VoIP Savings Calculator UK 2026
Openreach is switching off the traditional phone network, so businesses still on landlines or ISDN need a digital service. VoIP…
AI Automation ROI Calculator UK 2026
AI tools save time, but the reliable evidence is more modest than vendor claims. In the UK government's Microsoft 365…
Fleet Dashcam ROI Calculator UK 2026
Fleet dashcams can pay back in three ways: a lower insurance premium, fewer at-fault incidents as drivers know they are…
Website Design Cost Calculator UK 2026
Website design costs in the UK run from a simple brochure site to a custom web application, with most small…
Commercial Waste Collection Cost Calculator UK 2026
Commercial waste collection costs depend on four things: bin size, how often it is emptied, the waste stream and where…
Digital Marketing Agency Cost Calculator UK 2026
Most UK digital marketing agencies quote every client individually, so this calculator only uses the agencies that publish their prices.…
Fleet Fuel Savings Calculator
A fleet fuel savings calculator estimates how much UK businesses can reduce their fuel expenditure by adopting fuel card programmes,…
Time & Attendance ROI Calculator
A time and attendance ROI calculator quantifies the financial return of switching from manual timesheets to automated time tracking by…
Photocopier Lease vs Buy Calculator
A photocopier lease vs buy calculator helps UK businesses compare the total cost of leasing a multifunction printer against purchasing…
Franking Machine vs Stamps Calculator
This calculator estimates stamp postage against Mailmark franking plus a preset monthly rental. It covers letters and large letters up…
Business Loan Repayment Calculator UK
A business loan repayment calculator shows UK SMEs their monthly repayments, total interest payable, and overall cost of borrowing based…
Staff Turnover Cost Calculator
A staff turnover cost calculator quantifies the true financial impact of employee departures by accounting for recruitment, onboarding, lost productivity,…
Pension Contribution Calculator UK 2026/27
A pension contribution calculator helps UK employers and employees determine their exact auto-enrolment pension obligations based on qualifying earnings, contribution…
Mileage Allowance Calculator UK 2026/27
HMRC-approved mileage allowance payments let UK employees and self-employed individuals claim tax-free reimbursement for business journeys made in their own…
Holiday Entitlement Calculator UK (Annual Leave)
Every worker in the UK is legally entitled to 5.6 weeks of paid holiday - statutory annual leave - per…
Employer NIC Calculator UK 2026/27
Employer National Insurance contributions in the UK are charged at 15% on all employee earnings above the secondary threshold of…
Business Phone System Cost Calculator UK 2026
A business phone system cost calculator estimates the total expense of deploying VoIP, hosted PBX, or on-premise telephony across your…
EPOS System Cost Calculator UK 2026
An EPOS system cost calculator helps UK retailers, hospitality businesses, and service providers estimate the total expense of deploying an…
Merchant Account Fee Calculator UK 2026
Card payment processing fees for UK small businesses depend on your provider, average transaction value and monthly card turnover. Published…
Vehicle Tracking ROI Calculator UK 2026
Fleet tracking can cut fuel, insurance and admin costs. But the published savings figures come mostly from suppliers. Trakm8, for…
Payroll ROI Calculator UK 2026
Running payroll manually costs UK small businesses significantly more than most owners realise, with the average employer spending 3 to…
Business Energy Cost Calculator UK 2026
Estimate annual business electricity and gas costs by premises type and floor area, with the rates and kWh benchmarks shown…
Employee Cost Calculator UK 2026/27
Estimate UK employee payroll costs for 2026/27, including employer NI, pension contributions, benefits budgets and the Employment Allowance still available.
Calculators to Help at Home
Insulation Cost and Savings Calculator
Insulation is the rare home improvement where the cheapest measures pay back fastest. Loft insulation can return its cost in…
Conservatory Roof Replacement Cost Calculator
Replacing a conservatory roof transforms a space that is too hot in summer and too cold in winter into a…
EV Charging Cost Calculator: Home vs Public vs Petrol
How much does it cost to charge an electric car at home compared to public charging or petrol? Enter your…
Battery Storage Payback Calculator UK 2026
This battery storage payback calculator estimates annual electricity savings, simple payback and net returns over 10 and 15 years. With…
Window Energy Rating Savings Calculator UK 2026
Better windows lose less heat. The Energy Saving Trust says A-rated double glazing in an entirely single-glazed semi-detached home saves…
Heat Pump Running Cost Calculator UK
Air source heat pumps cost significantly less to run than many homeowners expect, with a typical UK household spending £800…
Conservatory Cost Calculator UK 2026
A conservatory cost calculator helps UK homeowners estimate the total price of adding a conservatory based on style, size, materials,…
Boiler Running Cost Calculator UK 2026
Estimate your annual gas boiler running cost by age, type and home size, and see what upgrading could save, using…
Solar Panel Savings Calculator UK 2026
Installing solar panels on a UK home averages around £6,500 for a standard 4kW system and can save homeowners between…
Double Glazing Cost Estimator UK 2026
Double glazing a typical three-bedroom home with 8–10 windows costs about £3,750 in white uPVC on MyJobQuote's national figures, with…
How Our Calculators Work
Every calculator on ExpertSure is built with the same principles:
- Verified UK data — pricing from Ofgem, HMRC, UK Cards Association, Visa/Mastercard rate cards, and provider websites, verified quarterly
- Transparent methodology — each calculator page explains exactly how results are calculated and where the data comes from
- No registration — instant results without signing up, entering your email, or speaking to a salesperson
- Mobile-friendly — all calculators work on phones, tablets, and desktops with the same accuracy
- Privacy-first — your inputs are processed in your browser only. We never store or transmit your data