United Kingdom
Local money and property decisions combine arithmetic with rules that depend on where you live. Use this directory to find the existing country-specific tools, then read each page’s assumptions and limitations. A rate entered by the user is not a verified current tax rate, an approved loan offer or an insurance quote. Tools that use no country rules remain in the universal library rather than being copied into each country folder.
Start with these tools
Mortgage Calculator UK
Calculate monthly mortgage payments for UK properties, including Loan-to-Value (LTV).
VAT Calculator
Add VAT to a net amount or remove VAT from a gross amount.
Solar Savings Calculator — United Kingdom
Estimate the financial effect of a specified rooftop solar scenario, with exported electricity valued separately from electricity used in the home. GBP planning view; stated limitations apply.
Roofing Materials and Cost Calculator — United Kingdom
Estimate covering material for a uniform-pitch roof using its horizontal footprint, then round to the specified bundle packaging. GBP planning view; stated limitations apply.
Heat Pump Sizing Calculator — United Kingdom
Translate an already assessed design load into a manufacturer-rating requirement at the local cold-weather performance point. GBP planning view; stated limitations apply.
Start with the amount or measurement you need to estimate and gather the inputs from your own documents. Separate recurring payments from one-off fees, and distinguish an annual rate from a monthly amount. A material quantity does not by itself include labor, delivery, waste or permission to build. Check each of those assumptions independently. The published library does not yet contain the complete verified regional data required by the master build plan; no state or county pages are published as substitutes for that missing evidence. For decisions involving tax, lending, insurance or construction requirements, confirm the applicable rules with the responsible authority or qualified professional. The related universal tools are useful for checking the underlying arithmetic without implying local approval.
mortgages
sales
VAT Calculator
Add VAT to a net amount or remove VAT from a gross amount.
Property Transfer Tax Planner — United Kingdom
England and Northern Ireland SDLT, Scotland LBTT and Wales LTT use distinct researched schedules. Relief and surcharge eligibility must be checked first. Ireland uses researched residential, qualifying apartment-block, non-residential and bulk-acquisition schedules. Canada adds seven provincial references, Toronto municipal bands, 49 Nova Scotia municipalities and two named Quebec city schedules; other Quebec municipalities and unsupported transfers require a separately verified manual amount. GBP planning view; stated limitations apply.
solar
Solar Savings Calculator — United Kingdom
Estimate the financial effect of a specified rooftop solar scenario, with exported electricity valued separately from electricity used in the home. GBP planning view; stated limitations apply.
Solar Panel Sizing Calculator — United Kingdom
Translate a site-specific annual energy target into a rounded panel count and a transparent material-cost scenario. GBP planning view; stated limitations apply.
Solar Battery Sizing Calculator — United Kingdom
Size an energy reserve for an explicitly selected critical load, rather than assume that the battery can supply every household circuit. GBP planning view; stated limitations apply.
Solar Payback Calculator — United Kingdom
Compare a simple first-year payback with a discounted cash-flow model that explicitly includes replacement and declining generation. GBP planning view; stated limitations apply.
Home Battery Economics Calculator — United Kingdom
Value stored electricity after charging losses and the opportunity cost of the charging energy. GBP planning view; stated limitations apply.
materials
Roofing Materials and Cost Calculator — United Kingdom
Estimate covering material for a uniform-pitch roof using its horizontal footprint, then round to the specified bundle packaging. GBP planning view; stated limitations apply.
Window Replacement Calculator — United Kingdom
Combine a quoted per-window replacement price with a conductive heat-loss comparison using whole-window U-values. GBP planning view; stated limitations apply.
Flooring Materials Calculator — United Kingdom
Round a rectangular floor area up to whole manufacturer packs and keep the extra material visible. GBP planning view; stated limitations apply.
Drywall Sheet Calculator — United Kingdom
Calculate board quantity while keeping layers, openings and cutting waste separate. GBP planning view; stated limitations apply.
Asphalt Paving Material Calculator — United Kingdom
Estimate asphalt paving material from a specified finished geometry; do not infer pavement design from area. GBP planning view; stated limitations apply.
Brick and Block Calculator — United Kingdom
Estimate masonry units from their modular face dimensions, including the entered mortar joint. GBP planning view; stated limitations apply.
Stucco Material Calculator — United Kingdom
Convert a specified stucco application thickness into bag quantity using the manufacturer wet-yield figure. GBP planning view; stated limitations apply.
Roof Pitch and Rafter Calculator — United Kingdom
Convert a measured roof rise and run into pitch, angle and an ideal geometric sloping length. GBP planning view; stated limitations apply.
Siding Material Calculator — United Kingdom
Use effective installed coverage rather than raw board dimensions to estimate siding packs. GBP planning view; stated limitations apply.
heating cooling
Heat Pump Sizing Calculator — United Kingdom
Translate an already assessed design load into a manufacturer-rating requirement at the local cold-weather performance point. GBP planning view; stated limitations apply.
Heating Cost Comparison Calculator — United Kingdom
Put electricity and the comparison fuel on the same delivered-heat basis instead of comparing unlike fuel units. GBP planning view; stated limitations apply.
Furnace Replacement Calculator — United Kingdom
Compare the fuel-cost consequence of two seasonal efficiencies at the same useful heating load. GBP planning view; stated limitations apply.
Electric Radiant Floor Calculator — United Kingdom
Calculate the connected load and a scheduled-use energy scenario for electric resistance floor heating. GBP planning view; stated limitations apply.
Room Heat Loss Calculator — United Kingdom
Estimate steady-state room heat loss from entered fabric properties, air exchange and a local outdoor design temperature. GBP planning view; stated limitations apply.
insulation sub
Insulation Upgrade Calculator — United Kingdom
Estimate the effect of an explicitly specified resistance upgrade on a building surface. GBP planning view; stated limitations apply.
Attic Insulation Calculator — United Kingdom
Estimate attic insulation quantity and heating savings while keeping moisture, ventilation and local resistance requirements outside the arithmetic. GBP planning view; stated limitations apply.
outdoor
Fence Materials Calculator — United Kingdom
Estimate a single open fence run with separate gates and subtract the post displacement from round concrete-filled holes. GBP planning view; stated limitations apply.
Driveway Material Calculator — United Kingdom
Estimate driveway material from a specified finished geometry; do not infer pavement design from area. GBP planning view; stated limitations apply.
Patio Material Calculator — United Kingdom
Estimate patio material from a specified finished geometry; do not infer pavement design from area. GBP planning view; stated limitations apply.
Sod and Turf Calculator — United Kingdom
Round a measured lawn area to supplier roll packaging without assuming that soil preparation is included. GBP planning view; stated limitations apply.
life and health
Life Insurance Needs Calculator — United Kingdom
Estimate a survivor-support funding gap from explicit obligations, assets and an annual support horizon. GBP planning view; stated limitations apply.
Pet Insurance Cost Comparison Calculator — United Kingdom
Compare one veterinary-cost scenario under a policy with an annual deductible, reimbursement percentage and insurer-payment cap. GBP planning view; stated limitations apply.
Income Protection Needs Calculator — United Kingdom
Estimate benefit and waiting-period cash needs using an actual policy replacement percentage and offset rule. GBP planning view; stated limitations apply.
Term Versus Whole Life Scenario Calculator — United Kingdom
Compare transparent cash-value scenarios using equal coverage needs and an actual guaranteed policy illustration. GBP planning view; stated limitations apply.
Life Premium Between Quoted Ages Calculator — United Kingdom
Interpolate between two actual comparable quotes without claiming an insurer age table or an actuarial premium forecast. GBP planning view; stated limitations apply.
property
Home Rebuild Cost Calculator — United Kingdom
Keep a building reinstatement budget separate from land value, sale price and household contents. GBP planning view; stated limitations apply.
Landlord Insurance Planning Calculator — United Kingdom
Keep building, landlord contents and rental-value allowances separate when comparing a landlord policy quote. GBP planning view; stated limitations apply.
Business Liability Quoted-Rate Calculator — United Kingdom
Reproduce an insurer-provided rating basis without inventing a market rate or a business classification. GBP planning view; stated limitations apply.
ownership costs
EV Charging Cost and Time Calculator — United Kingdom
Separate energy arriving in the battery from energy bought at the meter, and compare annual energy spending on the same driving distance. GBP planning view; stated limitations apply.
Vehicle Running Cost Calculator — United Kingdom
Calculate a whole-ownership budget without double counting loan principal as both purchase price and repayments. GBP planning view; stated limitations apply.
EV Versus Petrol Cost Calculator — United Kingdom
Compare an EV purchase-price difference with energy and maintenance scenarios for equal annual driving. GBP planning view; stated limitations apply.
Vehicle Depreciation Scenario Calculator — United Kingdom
Explore an explicitly chosen declining-balance vehicle-value scenario, without pretending it is a market valuation or tax depreciation schedule. GBP planning view; stated limitations apply.
Business Mileage Deduction Worksheet — United Kingdom
Calculate a mileage-rate worksheet only after the applicable rate, eligible journeys and reimbursement treatment have been verified. GBP planning view; stated limitations apply.
energy costs
project costs
Home Addition Cost Calculator — United Kingdom
Build a scoped home addition budget from an explicit area rate and itemized allowances rather than a fabricated national price. GBP planning view; stated limitations apply.
Attic Conversion Cost Calculator — United Kingdom
Build a scoped attic conversion budget from an explicit area rate and itemized allowances rather than a fabricated national price. GBP planning view; stated limitations apply.
Bathroom Remodel Cost Calculator — United Kingdom
Build a scoped bathroom remodel budget from an explicit area rate and itemized allowances rather than a fabricated national price. GBP planning view; stated limitations apply.
Kitchen Remodel Cost Calculator — United Kingdom
Build a scoped kitchen remodel budget from an explicit area rate and itemized allowances rather than a fabricated national price. GBP planning view; stated limitations apply.
structural
Retaining Wall Block Calculator — United Kingdom
Count face blocks for a specified wall geometry, without representing the takeoff as a retaining-wall design. GBP planning view; stated limitations apply.
Strip Foundation Concrete Calculator — United Kingdom
Calculate concrete quantity for an already specified rectangular strip foundation. GBP planning view; stated limitations apply.
Rebar Takeoff Calculator — United Kingdom
Estimate a rectangular reinforcement grid from specified cover, spacing, bar size and layer count. GBP planning view; stated limitations apply.
Simply Supported Steel Beam Screening Calculator — United Kingdom
Check the arithmetic of an idealized simple beam with a specified section and uniformly distributed total load. GBP planning view; stated limitations apply.
systems
Pipe Flow and Diameter Screening Calculator — United Kingdom
Translate an explicit design flow and velocity into a geometric bore diameter. GBP planning view; stated limitations apply.
Water Heater Storage and Recovery Calculator — United Kingdom
Relate a specified mixed-water draw to ideal storage and recovery power using an explicit temperature balance. GBP planning view; stated limitations apply.
auto
payroll
Paycheck Planning Calculator — United Kingdom
Estimate ordinary employment take-home pay from dated country tax and contribution rules. Canada, UK and Ireland use the selected supported contribution class; the national US view requires an explicit verified payroll amount. GBP planning view; stated limitations apply.
Self-employment Contribution Calculator — United Kingdom
Estimate ordinary US self-employment contributions, UK Class 4/voluntary Class 2, or Irish annual self-assessed Class S PRSI. Income tax, USC, capital gains and special exemptions are separate. GBP planning view; stated limitations apply.
Contractor versus Employee Offer Calculator — United Kingdom
Translate an employee compensation package into a contractor fee target using realistic billable time, without deciding legal employment status. GBP planning view; stated limitations apply.
income
Income Tax Planning Calculator — United Kingdom
Estimate ordinary annual employment income tax with dated country rules, separating deductions, basic credits, Canadian provincial calculations, Irish USC and separately entered other local tax. GBP planning view; stated limitations apply.
Property Tax Calculator and Bill Planner — United Kingdom
Calculate 2026 Irish LPT using all 31 local-authority adjustments and the 2026–2030 valuation bands, or budget from a separately verified US assessment or UK Council Tax/domestic-rates bill. GBP planning view; stated limitations apply.
UK Student Loan Repayment Calculator — United Kingdom
Estimate income-contingent repayments from 2026/27 plan thresholds. Balance, interest accrual and write-off rules are not reduced to an ordinary amortizing loan. GBP planning view; stated limitations apply.
capital gains and estate
Capital Gains Tax Scenario Calculator — United Kingdom
Separate gain, taxable inclusion and tax rate. This explicit-rate scenario is not an automatic preferential-rate, stacking, indexation or recapture calculation. GBP planning view; stated limitations apply.
Inheritance and Gift Tax Planner — United Kingdom
Calculate an Irish CAT group-threshold scenario without charging tax again on earlier benefits. US estate tax and UK inheritance tax are distinct systems; their inputs must be computed separately. GBP planning view; stated limitations apply.
credit and debt
loans
loans and leasing
specs
payroll and hiring
pricing and margin
Freelance Rate Calculator — United Kingdom
Turn an explicit personal-income target into a billable rate while making nonbillable work and unpaid invoices visible. GBP planning view; stated limitations apply.
Business Break-Even Calculator — United Kingdom
Calculate a single-product contribution break-even with whole-unit rounding and a clearly defined accounting period. GBP planning view; stated limitations apply.
SaaS Contribution Pricing Calculator — United Kingdom
Solve an explicit cost-plus SaaS pricing scenario without confusing a margin on revenue with a markup on cost. GBP planning view; stated limitations apply.
valuation
saas metrics
Customer Lifetime Value Calculator — United Kingdom
Distinguish the common contribution/churn shortcut from a finite, explicitly discounted customer-retention scenario. GBP planning view; stated limitations apply.
Customer Acquisition Cost Calculator — United Kingdom
Calculate acquisition cost using a matched spending window and paying-customer cohort rather than divide by every new sign-up. GBP planning view; stated limitations apply.
Customer and Revenue Churn Calculator — United Kingdom
Keep new-customer revenue outside the opening-cohort retention measures and allow genuinely negative net revenue churn. GBP planning view; stated limitations apply.
Cash Burn and Runway Calculator — United Kingdom
Estimate time to a chosen cash reserve under constant cash inflow and outflow, using cash rather than accounting profit. GBP planning view; stated limitations apply.
employment
Frequently asked questions
How do I choose a tool from United Kingdom?
Start with the quantity you need to solve for, then compare the required inputs and assumptions before entering values.
Are results in United Kingdom guaranteed?
No. Read the formula, limitations and reference information on the individual calculator. Entered example rates are not current offers or professional advice.
Can I save a calculation from United Kingdom?
The calculator pages support browser-local project and share controls. Shared links and exported files may contain your inputs.