Guides

Guides for the questions behind the calculators

Find the guide that matches the job at hand, from payslips and pensions to seller tools, household costs and creator income. Each one explains the assumptions before you run a calculation.

Pay and workplace

Payslips, deductions, pensions, leave and working-time questions.

How to estimate take-home pay

Gross pay, tax, National Insurance, pensions, student loans and why payslips can differ.

Read the take-home pay guide

Pension contributions and tax relief

Net pay, relief at source and salary sacrifice explained.

Read the pension guide

Seller and small business

Marketplace offers, postage labels and VAT checks.

Should I accept an eBay offer?

Check buyer offers against item cost, postage, packaging, promoted listing rate, fee assumptions and minimum profit.

Read the eBay offer guide

Print eBay labels on unused A4 sheets

Move postage label PDFs onto spare A4 label sheet slots, check printer scaling and avoid wasting part-used sheets.

Read the label printing guide

VAT rates and invoice checks

Learn the difference between net, VAT and gross amounts, and why removing VAT is not the same as subtracting 20%.

Read the VAT guide

Home, travel and money

Household bills, saving plans and everyday cost checks.

How to compare electricity tariffs

Compare unit rates, standing charges, annual kWh, exit fees and fixed tariff terms.

Read the tariff guide

Savings goals and interest

Plan savings targets with realistic monthly amounts, interest assumptions, slower-plan checks and savings-interest caveats.

Read the savings guide

Creator income

Platform payouts, sponsorship quotes, expenses and income records.

Creator income guides

Estimate Twitch payouts, Bits, sponsorship quotes, creator expenses and take-home planning assumptions.

Open the creator guide hub

How Twitch payouts work

Subs, Prime subs, gifted subs, Bits, ads, fees, expenses and why dashboard income can differ from take-home.

Read the Twitch payout guide

Creator sponsorship rates

Build a brand deal quote from audience, CPM, deliverables, production time, usage rights and exclusivity.

Read the sponsorship guide

Creator income checklist

Check monthly platform revenue, sponsor invoices, expenses, reserves and records before treating income as take-home.

Read the creator checklist

Internet and data

Make sense of connection speeds and file-size measurements.

Mbps vs MB/s explained

Bits, bytes, broadband speeds, download rates, GB, GiB and why internet speed is not the same as file size.

Read the internet speed guide

How these guides support the calculators

The calculators give a fast result, but many real-world questions need a little context before the number makes sense. These guides explain common assumptions in plain English: what counts as gross pay, why a payslip can differ from an estimate, how creator payout lines should be separated, how decimal hours work, why removing VAT is not the same as subtracting 20%, and where holiday entitlement can change for starters, leavers or irregular work patterns.

Each guide links back to the relevant tool so you can read the explanation, run a calculation, then come back to check the edge cases. The aim is that a page is useful before anyone enters a number.

Limits and source notes

Clear Calculators guides are for general checking and planning. They are not financial, tax, employment, legal or professional advice. Where official rules matter, the page points to the relevant calculator assumptions or source notes.

For formal decisions, compare the calculator result with official guidance, employer documents, invoices, contracts or payslips. This matters most for tax, National Insurance, pensions, student loans, holiday entitlement, VAT, savings interest and employment-related decisions.

Clear Calculators guides are for general checking only. They explain common calculation assumptions and do not replace financial, tax, employment, legal or professional advice.