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Tax & Company

Self Assessment Return Checker

Prepare and sense-check your SA100 tax return before you file

£20

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Self Assessment Return Checker

Overview

Filing a Self Assessment return is much less stressful when you know roughly what the answer should be before you start. This workbook helps you do exactly that. It checks whether you need to file at all, collects your figures in the same order as the tax return, estimates your income tax, National Insurance, student loan, Child Benefit charge and capital gains tax, and tells you what you'll have to pay on 31 January and 31 July.

Price
£20
Who it’s for
Tax & Company
Works with
Microsoft Excel for Windows and Mac
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See how it works

A walk through the main sheets

The sheets you will use most, in the order you will use them – shown with the sample data every workbook comes with.

Step 1

Do I Need To File

HMRC's reasons for a return, checked against your figures. What you do: answer the three Yes / No questions.

Do I Need To File
Income

Step 2

Income

Every type of income, laid out like the return, with last year alongside. What you do: enter this year and last year.

Step 3

Reliefs

Pension contributions, Gift Aid, allowances and Child Benefit. What you do: enter what you paid and received.

Reliefs
Tax Calculation

Step 4

Tax Calculation

The full estimated calculation from total income to the balance to pay. What you do: nothing – calculated.

Who it is for

Made for people like you

  • Example – text
  • Employees with extra income – Rents, savings, dividends, tips or a side business on top of a PAYE job.
  • Sole traders – Self-employment profit, Class 4 NI and payments on account worked out.
  • Landlords – Rental profit with the 20% mortgage interest credit.
  • Higher earners with children – The High Income Child Benefit Charge and pension relief that reduces it.
  • Anyone who has sold shares or property – A capital gains tax estimate and a reminder of what to report.
  • WATCH OUT – This is an estimate to help you prepare and check – it is NOT a substitute for HMRC's own calculation or your filing software. Always check the calculation HMRC shows before you submit.

Quick start

Up and running in minutes

  1. Example – text
  1. Your Details – Enter your name, the tax year, whether you're a Scottish taxpayer, your student loan plan, how you'll file, and any payments on account already made for this year.
  2. Do I Need To File – Most rows check your figures automatically. Answer Yes or No to the three questions marked with a yellow cell.
  3. Income – Work through each block – employment, self-employment, property, savings and dividends, pensions, foreign, other and capital gains. Add last year's figures in the right-hand column for the year-on-year checks.
  4. Reliefs – Enter pension contributions and Gift Aid you paid, marriage allowance, Blind Person's Allowance and any Child Benefit received.
  5. Check the results – Read the Tax Calculation, then Payments & Deadlines for what to pay and when.
  6. Look at the checks – Year-on-Year Checks flags big changes and common errors. Tick off the Documents checklist as you gather paperwork.

Key features

  • Checks whether you need to file a return, against HMRC's current reasons – automatically from your figures where it can.
  • Collects every common part of the return: employment, self-employment, property, savings, dividends, pensions, foreign income, other income and capital gains.
  • Works out your income tax, Child Benefit charge, Class 4 NI, student loan and CGT – with pension and Gift Aid relief, marriage allowance and Blind Person's Allowance.
  • Shows what's left to pay, payments on account, the 31 January and 31 July amounts, key dates and the penalties for being late.
  • Year-on-year and sense checks, plus a document checklist. Not a substitute for HMRC's own calculation or filing software.

What’s included

  • Dashboard – Your return at a glance
  • Your Details – You, the tax year and payments made
  • Do I Need To File – HMRC's reasons, checked
  • Income – Everything you received
  • Reliefs – Pensions, Gift Aid, allowances, Child Benefit
  • Tax Calculation – The full estimated calculation
  • Payments & Deadlines – What to pay, when, and penalties
  • Year-on-Year Checks – Big changes and sense checks
  • Documents – What to gather
  • Tax Rates – UK rates used
  • Guide – How to use this workbook

How buying works

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