Preparing a Self Assessment tax return becomes much simpler when your paperwork is ready before you start. The documents you need depend on how you earned money during the tax year. A sole trader may need invoices and expense records. A landlord may need rental statements. Someone who also works through PAYE may need a P60 or P45.



This matters for people across Leeds because there is no single document pack that suits every taxpayer. A landlord with a property in Headingley will have different records from a self employed builder working around Morley. A freelancer in Leeds city centre may need another set of figures.



Whether you file yourself or use self assessment tax return services, gathering the right records first can save time and reduce the risk of leaving income out of your return.



Start With Your Personal Tax Details



Before looking at income and expenses, collect the basic information linked to your tax record. You will normally need your National Insurance number and Unique Taxpayer Reference, often called a UTR.



Your UTR is a 10 digit number used by HMRC to identify you for Self Assessment. Keep it separate from your National Insurance number because they serve different purposes.



It is also useful to have access to your HMRC online account. Some personal tax information can already appear there. However, you should not assume that every figure you need will be available automatically.



If your address, name or other personal information has changed, check that HMRC holds the correct details before filing.



Documents for Self Employed People



A sole trader needs records that show what the business earned and what it spent. HMRC requires self employed people to keep records of business income and expenses. You do not normally send all those documents with the return, but you need them to prepare accurate figures. HMRC can also ask to see supporting records later.



Start with your sales records. These might include invoices sent to customers, till records, online payment reports and other evidence of business income.



Then gather your expense records. Depending on the business, these could include receipts and invoices for stock, materials, business travel, software, insurance and other costs.



Consider a self employed electrician working across Pudsey, Armley and Bramley. Looking only at deposits in a bank account may not give the full picture. The trader should also have invoices and records explaining the business transactions.



HMRC specifically lists evidence such as receipts, bank statements, sales invoices, till rolls and bank slips among the records a self employed person may need to retain.



Do You Need Business Bank Statements?



Bank statements can play an important part in preparing your figures. They help you check payments received from customers and money paid to suppliers.



However, a bank statement should not replace proper bookkeeping. A payment of £300 does not explain what was purchased or whether the whole amount relates to the business.



Keep the invoice or receipt that explains the transaction where appropriate.



If you use one account for both personal and business spending, you will need to identify which transactions relate to the business. Keeping business activity organised throughout the year can make this much easier.



People using self assessment tax return services should provide clear records rather than expecting an accountant to identify every transaction from a bank statement alone.



Employment Documents You May Need



Being employed does not prevent you from needing Self Assessment. You might have a job through PAYE alongside freelance work, rental income or another source of taxable income.



If you were employed at the end of the tax year, your P60 is an important record. It shows your employment pay and tax for that year.



If you left a job during the year, you may also have a P45. This records your pay and tax up to the date you left.



A P11D may be relevant if your employer reported taxable benefits or expenses. Examples can include certain company cars or other employment benefits.



HMRC advises employees and company directors to keep documents relating to pay and tax, including relevant P45, P60 and P11D information.



Do not ignore PAYE income because tax has already been deducted. The information may still be needed when preparing your overall Self Assessment return.



Records for Leeds Landlords



Property income needs its own records. A landlord should be able to show how much rent was received and identify costs connected with the rental activity.



Keep rental statements, bank records and other evidence of rent received. You should also retain invoices and receipts for relevant property costs.



For example, someone letting a house in Headingley may have records for repairs, letting agent charges and insurance. A landlord with several properties around Hyde Park or Burley may need separate records to keep each property's activity clear.



Do not assume that every payment connected with a property receives the same tax treatment. Keep the original records so the figures can be reviewed correctly.



UK property income has a specific supplementary section within Self Assessment. HMRC uses the SA105 pages for UK property income where those pages apply.



Savings, Dividends and Investment Records



Your business or property records may not be the end of the paperwork.



You may also have savings interest, dividends or investment activity to consider. Keep annual statements, dividend information and other records showing the income you received.



This becomes particularly important when you have several accounts or investments. Do not rely on memory when preparing a return months after the tax year ended.



If you sold investments or another asset, keep records showing when you acquired the asset, what you paid and what happened when you disposed of it. Other costs may also matter when calculating a gain.



HMRC has separate Self Assessment supplementary pages for capital gains. Supporting records should therefore be kept when a gain or loss needs reporting.



What If You Have Foreign Income?



Overseas income can require more paperwork.



You may need statements or other records showing foreign earnings, overseas savings, dividends, pensions or property income. The exact information depends on what you received and your circumstances.



HMRC uses the SA106 supplementary pages for foreign income and gains where those pages are required.



Keep the original documents even if the amounts appear in a foreign currency. Do not simply add an approximate sterling figure without understanding how the amount should be reported.



Foreign income can involve tax questions beyond basic data entry. If you are unsure how an overseas source should appear on your return, seek appropriate tax advice rather than guessing.



Pension Contributions and Gift Aid Records



Some payments you make during the year can also matter when completing Self Assessment.



Keep statements showing relevant personal pension contributions. You should also keep details of eligible Gift Aid donations if they affect your return.



These figures can be overlooked because they are not business income or expenses. However, HMRC includes pension statements and details of eligible tax reliefs among the information taxpayers may need when preparing Self Assessment.



Review the whole tax year rather than looking only at your business bank account.



Documents for Construction Workers Under CIS



Leeds has a large number of tradespeople and construction workers who operate as subcontractors. Someone working on projects around Holbeck, Hunslet or wider West Yorkshire may have tax deducted under the Construction Industry Scheme.



If CIS applies to you, keep the payment and deduction statements provided by contractors. These records show the deductions taken from your payments.



You will still need records of your own business income and relevant costs.



Do not confuse CIS deductions with your final tax position. The return brings your figures together so the tax calculation can take account of relevant information.



For someone with several contractors during the year, keeping each statement in one place can make the year end work far more manageable.



Do You Need Receipts for Every Business Expense?



You need records that support the figures used in your return.



HMRC tells self employed people to keep proof relating to business expenses. This can include receipts for***ds and stock, bank records and other supporting documents.



This does not mean throwing every receipt into a drawer until January.



Sort records as the year progresses. Digital copies can also help where appropriate. HMRC says records may generally be kept on paper, digitally or through software, although different digital obligations can apply under Making Tax Digital.



Good organisation also helps when using **self assessment tax return services** because your adviser can spend more time reviewing the figures and less time identifying unexplained payments.



What If Some Documents Are Missing?



Missing paperwork does not mean you should invent a figure.



First, try to obtain another copy. Your bank may provide an older statement. A supplier might be able to resend an invoice. An employer may be able to provide information from a missing employment document.



HMRC advises taxpayers to recreate missing records where possible. If records cannot be fully recreated, provisional or estimated figures may sometimes be necessary. You need to tell HMRC when such figures have been used.



Deal with missing records early. Discovering a missing statement several months before the filing deadline gives you more options than finding the problem on 30 January.



Create a Self Assessment Folder Before You Start



A simple folder structure can save hours.



Create separate sections for business income, expenses, employment, property, savings, investments, pensions and other relevant income. You only need the sections that apply to you.



A freelancer working near Wellington Place, for example, might need folders for freelance invoices, software costs, employment income and pension contributions. A landlord in Roundhay may need property records alongside employment and investment information.



Do the same with digital documents. Give files clear names and group them by tax year.



The purpose is not to create more administration. It is to make sure you can trace each figure back to a record.



Making Tax Digital Changes Record Keeping



Record keeping is becoming more digital for some sole traders and landlords.



Making Tax Digital for Income Tax started from 6 April 2026 for qualifying people with total self employment and property income above £50,000, based on the relevant earlier return. Those within the rules need compatible software for digital records and quarterly updates.



The income threshold falls to above £30,000 from April 2027. It then falls to above £20,000 from April 2028.



If the rules apply to you, collecting documents only once a year is no longer a sensible approach. Your bookkeeping needs to remain current throughout the year.



When Should You Start Gathering Your Documents?



Start as soon as the tax year ends, or better still, keep records organised throughout the year.



For the 2025 to 2026 tax year, HMRC must receive a paper return by 31 October 2026. The normal online filing deadline is 31 January 2027. Tax due must normally also be paid by 31 January 2027.



Waiting until January creates avoidable pressure. You may discover that an employer document is missing or that several business payments have no supporting invoices.



Preparing early also gives you more time to understand the tax amount before it becomes payable.



When Can Self Assessment Tax Return Services Help?



Some taxpayers only have a few documents and feel comfortable preparing the return themselves. Others have business income, property, PAYE earnings and investments within the same year.



This is where self assessment tax return services may be useful. An accountants in leeds can review the records, identify missing information and prepare the relevant figures before submission.



The service should not replace your own record keeping. You still need to provide accurate information about your income and circumstances.



If you use an adviser, send your records well before the filing deadline. This leaves time to answer questions rather than dealing with everything during the final days of January.



A Final Check Before Your Return Is Prepared



Before starting the return, look at your records as a complete picture of the tax year.



Check that you have considered employment, self employment, property, savings, dividends, pensions, overseas income and asset disposals where relevant. Most people will not need every category.



Then make sure you have evidence behind the figures.



A Leeds sole trader with only business income may need a fairly small document pack. Someone with a business, two rental properties and investments may need far more.



That difference is exactly why there is no universal Self Assessment document checklist.



Frequently Asked Questions



Do I send all my receipts to HMRC with my tax return?



No. You normally use your records to prepare the figures rather than sending every receipt with the return. You must keep supporting records because HMRC may ask to see them.



Do I need my P60 for Self Assessment?



If you have employment income, your P60 can provide important information about your pay and tax for the year. A P45 may also be relevant if you left a job.



Do landlords need separate property records?



Landlords should keep evidence of rent received and relevant property costs. Keeping clear records becomes particularly useful when you own more than one rental property.



Can I use bank statements instead of receipts?



Bank statements can support your records, but they may not explain what a payment was for. Keep invoices and receipts where they provide the evidence behind a transaction.



How long should I keep Self Assessment records?



The period depends on your circumstances. Self employed people generally need to retain their business records for at least five years after the 31 January submission deadline for the relevant tax year.





Conclusion



The documents needed for Self Assessment depend on how you earned and used money during the tax year. There is no reason for a Leeds sole trader, landlord and investor to prepare identical paperwork.



Start with your personal tax details. Then work through each source of income and gather the records behind it. Include relevant expenses, tax already paid and information supporting any reliefs or gains.



Good preparation makes the return easier to check and gives you time to resolve missing information. If your tax affairs cover several areas, self assessment tax return services can help bring those records together. However, accurate records still start with you.



The best ha*** is simple. Keep documents organised while transactions are still fresh, rather than trying to rebuild an entire tax year shortly before the January deadline.