If you’re putting off your 2024-2025 tax return because you’re not sure what paperwork you need, you’re not alone. Most delays don’t happen because people don’t want to file. They happen because documents are missing, scattered, or confusing.
Here’s the thing. HMRC doesn’t expect perfection, but they do expect accurate figures backed by records. The more organised you are before you start, the faster your return gets done and the less stress you deal with in January.
This guide walks you through exactly what documents you need, based on how you earn your income, so you can prepare properly and avoid last-minute panic.
Employment income documents (PAYE workers)
If you were employed during the 2024-2025 tax year, you’ll need records showing what you earned and what tax was already deducted.
The main documents to gather are:
- P60 from your employer
This shows your total pay and tax deducted for the year. - P45 if you changed jobs
This covers earnings and tax paid before leaving your previous role. - Payslips (especially the final one for the tax year)
These help confirm figures if there are discrepancies. - P11D (if applicable)
This covers benefits like company cars, fuel, or private medical insurance.
Why this matters:
Even if all your income was taxed through PAYE, you may still need to file a Self Assessment return. This is common if you had more than one job, earned over £100,000, or had other income on the side.
Self-employed income records
If you’re self-employed, subcontracting, or running a sole trade, HMRC expects a clear record of what you earned and what you spent.
You’ll need:
- Invoices issued
Copies or records showing dates, amounts, and who paid you. - Bank statements
These help confirm income and spot anything missed. - Cash income records
If you were paid in cash, you still need to declare it. - CIS statements (if you’re a subcontractor)
These show tax already deducted at source.
On the expenses side, keep records for:
- Tools and equipment
- Materials
- Fuel, vehicle costs, or mileage logs
- Mobile phone and internet (business portion)
- Insurance, training, and work clothing (where allowable)
HMRC requires you to keep records even if you don’t submit receipts with your return. If they ask questions later, this is what protects you.
If you’re self-employed or working under CIS, getting your paperwork together early makes filing quicker and avoids delays.
You can securely send your invoices, CIS statements and expenses directly to us using our document upload system.
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Rental income paperwork
If you rent out property, even part of your home, HMRC treats this as taxable income.
You’ll need:
- Rental income statements
Monthly or annual records of rent received. - Letting agent statements
These show fees deducted and rent paid over. - Mortgage interest statements
Not fully deductible, but still relevant for calculations. - Property expenses, such as:
- Repairs and maintenance
- Insurance
- Safety certificates
- Agent fees
- Service charges
If you own more than one property, keep records separate for each. This avoids mistakes and makes future years easier.
Savings, Dividends, and Crypto
Many people miss this section, especially if income is small. HMRC still expects it to be declared where required.
Savings Interest
Gather:
- Bank and building society interest certificates
- Annual summaries from online accounts
Even though many people have a Personal Savings Allowance, interest above this must be declared.
Dividends
If you own shares or run a limited company:
- Dividend vouchers
- Company dividend statements
- Share platform annual summaries
Dividend income has its own tax rates and allowances, so accuracy matters.
Crypto Assets
If you bought, sold, swapped, or used crypto:
- Transaction histories from exchanges
- Dates, values, and disposal details
- Records of fees paid
Crypto mistakes are one of the fastest ways to trigger HMRC questions. Clear records make this far simpler.
Multiple income sources make tax returns more complex. If you’ve got employment income alongside self-employment, rental income, dividends or savings, it’s worth having everything reviewed properly.
We’ll check the figures, apply the right allowances, and make sure you’re not paying more tax than you should.
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Pension contributions and student loan information
These details affect your final tax bill, even though they’re often overlooked.
Pension Contributions
You may need:
- Statements showing personal pension contributions
- Confirmation of relief at source
- Details of salary sacrifice arrangements
Pension contributions can reduce your taxable income, but only if they’re reported correctly.
Student Loans
Gather:
- Student Loan Plan type (Plan 1, Plan 2, Plan 4, or Postgraduate)
- Total repayments already made (usually on payslips or P60)
This ensures repayments are calculated accurately and prevents overpayment.
Why getting this ready early matters
When documents are missing, three things usually happen:
- Filing gets delayed
- Mistakes slip in
- People overpay tax or face penalties
HMRC penalties don’t care whether the delay was intentional. Preparing early gives you control and breathing room.
Final step: Get everything in one place
Once you’ve gathered your documents:
- Label them clearly
- Group them by income type
- Upload them securely when you’re ready
If you’d rather not handle this alone, Tax2u can review your records, spot gaps early, and file accurately on your behalf. You don’t need to wait until January to get peace of mind.
Getting organised now means fewer surprises later and that’s always worth it.
The earlier you prepare, the easier filing becomes. Waiting until January often leads to rushed decisions, missed claims, and avoidable penalties.
If you’re ready to get started, send your documents now and let us take care of the rest.
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