Tax Guides
Plain English explanations of the UK tax system for self-employed people.
Cluster 1: Tax basics & Self Assessment
Start here if you are new to sole trader tax
These guides cover registration, Self Assessment, tax rates, payments on account, and the core HMRC calendar.
How to register as a sole trader with HMRC: step-by-step guide for 2025/26
Government Gateway setup, UTR, CWF1, and the 5 October registration deadline.
Sole trader Self Assessment: a complete beginner's guide
What Self Assessment is, who needs to file, what records you need, and how to submit online.
Sole trader tax rates and thresholds for 2025/26 explained
Personal Allowance, Income Tax bands, Class 4 NI, and Class 2 voluntary contributions.
What are payments on account — and how do you avoid the January shock?
Why a £5,000 bill can become £7,500 in January, with notes on reducing payments via SA303.
Key HMRC dates for sole traders in 2025/26: your tax calendar
5 October, 31 January, 31 July, penalties, and the difference between filing and payment deadlines.
Cluster 2: Expenses & Allowances
Claim costs correctly before you estimate tax
These guides explain allowable expenses, mileage, working from home, the trading allowance, and equipment claims.
What expenses can sole traders claim in 2025/26? The complete HMRC list
Office costs, travel, equipment, clothing, training, and the wholly and exclusively rule.
Mileage allowance for sole traders: the 45p/25p rule and how to claim it
Approved mileage rates, mileage logs, actual costs vs flat rate, and electric vehicles.
Working from home as a sole trader: how to claim use-of-home expenses
HMRC simplified expenses, actual cost apportionment, household bills, and records.
The trading allowance explained: should you use it or claim expenses?
When the £1,000 trading allowance beats itemised expenses, with a worked comparison.
Annual Investment Allowance (AIA) for sole traders: claiming for equipment and tools
The £1m AIA limit, qualifying plant and machinery, cars excluded, and a worked example.
Cluster 3: Making Tax Digital
Prepare for the April 2026 MTD deadline
These guides cover the Income Tax rollout, quarterly updates, and choosing MTD-compatible software.
Making Tax Digital for sole traders: everything you need to know for April 2026
Who is affected, the £50k/£30k/£20k rollout, quarterly reporting, and approved software.
Best MTD-compatible software for sole traders: FreeAgent vs QuickBooks vs Xero compared
A practical comparison of cost, features, ease of use, accountant access, and fit.
MTD quarterly updates: what do you actually need to send to HMRC?
What quarterly summaries contain, key deadlines, and how they differ from annual finalisation.
Cluster 4: VAT & Business Setup
Set up the business properly as it grows
These guides cover VAT registration, business structure, hiring staff, and invoicing basics.
Do I need to register for VAT as a sole trader? The £90,000 threshold explained
Mandatory vs voluntary registration, the Flat Rate Scheme, and VAT cash-flow effects.
Sole trader vs limited company: which is right for you in 2025?
Tax comparison, liability, admin burden, IR35, and when incorporation may help.
Can a sole trader employ staff? What you need to know about PAYE and employer NI
Payroll setup, employer National Insurance at 15%, auto-enrolment, and insurance duties.
How to invoice as a sole trader: what every invoice must include
Required invoice details, numbering, payment terms, late payment rules, and VAT invoices.
Cluster 5: National Insurance, Pension & Benefits
Understand contributions, retirement, and support
These guides cover National Insurance, pension tax relief, and Maternity Allowance for sole traders.
Class 2 and Class 4 National Insurance for sole traders in 2025/26: what you actually pay
Voluntary Class 2 at £3.50/week, Class 4 rates and thresholds, and State Pension entitlement.
Sole trader pension: how to save for retirement and cut your tax bill at the same time
SIPP contributions, tax relief at source, annual allowance, and worked examples.
Maternity pay for sole traders: what you're entitled to and how to claim it
Maternity Allowance, eligibility, the 26-week qualifying window, and how to claim.
Cluster 6: Record-Keeping, Compliance & HMRC Investigations
Keep records clean and avoid preventable penalties
These guides cover HMRC record keeping, late filing and payment penalties, appeals, and accounting basis choices.
Record-keeping for sole traders: what HMRC requires and for how long
The 5-year retention rule, what records count, digital vs paper, and investigation triggers.
HMRC penalties for sole traders: late filing, late payment, and how to appeal
The £100 day-one penalty, 3/6/12 month penalties, interest, Time to Pay, and appeals.
Cash basis vs traditional accounting for sole traders: which should you choose?
How each method works, who benefits, year-end invoice timing, and MTD interaction.
Cluster 7: Practical Guides Tied to Tools
Use the calculators with a clear checklist
These guides walk through the tax tools step by step and help first-time filers prepare before using HMRC.
How to calculate your take-home pay as a sole trader: a step-by-step guide
Gross income, allowable expenses, taxable profit, Income Tax, NI, and spendable take-home pay.
How to prepare for your first Self Assessment tax return: a practical checklist
Documents to gather, expenses to review, common mistakes, tool checks, and payment planning.
More sole trader guides
How self-employed income tax works in the UK
A straightforward explanation of Personal Allowance, tax bands, and how your final bill is calculated.
How to estimate your self employed tax bill in the UK
A step-by-step order of operations: profit, tax stack, gaps, and cash-flow habits.
Understanding Class 2 and Class 4 National Insurance
How both classes work for sole traders, voluntary Class 2, and Class 4 on profits.
When and how to register for VAT as a sole trader
A guide to the £90,000 rolling threshold and what changes when you become VAT registered.
When do you need to register for VAT as a sole trader
Rolling turnover, mandatory vs voluntary registration, and what to monitor monthly.
How a day rate translates to an annual salary
Why £300/day isn't the same as a £70k salary, and how to estimate your true earnings.
What 'take-home pay' really means for the self-employed
Factoring in student loans, pensions, and running costs to find your actual available cash.
A simple system for setting aside tax each week
Practical budgeting tips so you're never caught short when the January tax bill arrives.
How much tax should you set aside as a sole trader
Move from rough percentages to a savings rhythm tied to your real liability.
Key self-assessment dates and how to file
Don't miss a deadline. A calendar of what you need to do and when.