What Is an SA302 and Why Do Lenders Want It in 2026?

Hayden Richards, CeMAP — Senior Mortgage & Protection Adviser
Last reviewed: 30 July 2026

An SA302 is HMRC’s official summary of the tax you’ve calculated and declared through Self Assessment, and it’s one of the first documents a lender asks for when you’re self-employed. Lenders ask for it because it is the only document that ties the income on a mortgage application directly back to HMRC’s own records, and it is usually requested together with a Tax Year Overview from the same tax year.

Key Takeaways

• An SA302 is a tax calculation summary, not a bank statement or invoice log. It shows what HMRC has recorded as your declared income for a given tax year.
• Lenders use it to cross-check the income figures you’ve stated on your application against what HMRC actually holds on file.
• Most lenders ask for two years’ worth, but that’s a preference, not a fixed rule, and it matters a great deal if you’re a one-year accounts applicant.
• You can download SA302s directly from your HMRC online account going back up to four tax years, or ask your accountant to produce an equivalent tax calculation.
• A Tax Year Overview is a separate but linked document that lenders usually want alongside the SA302 to confirm the figures were actually paid.
• Errors on a submitted return can usually be amended within HMRC’s standard 12-month window, which matters if a mortgage check flags a discrepancy.
• Self-employed income assessment is a broader subject than just the SA302, and it’s covered in more depth on our self-employed mortgages page.

What Is an SA302 and Why Do Lenders Want It in the First Place?

The SA302 is a summary document generated from your Self Assessment tax return. It sets out your total income, the tax due on it, and how HMRC arrived at that figure.

Lenders want it because it’s an independent record. Your accounts, invoices, and bank statements tell a story, but the SA302 confirms that HMRC has seen and processed the same numbers.

For someone with a single year of trading, this document carries extra weight. It’s often the clearest piece of third-party evidence that your reported profit is real, filed, and accepted by HMRC rather than simply projected on a spreadsheet.

Why Do Lenders Want an SA302 Rather Than Just Your Accounts?

Accounts prepared by an accountant are useful, but they aren’t independently verified by a government body in the way a filed tax return is.

An underwriter reviewing a self-employed file wants to see that the income declared for tax purposes matches the income presented on the mortgage application. If the two don’t align, that’s a question mark that needs explaining before anything can proceed.

This is particularly relevant for contractors and company directors, where income can be structured across salary, dividends, and retained profit. The SA302 helps a lender see how those pieces fit together on paper, rather than relying solely on a director’s own summary.

How Many SA302s Do You Need With Only One Year’s Accounts?

Most high street lenders default to asking for two years of SA302s and matching Tax Year Overviews. If you’ve only been trading for one full tax year, that standard request simply can’t be met in full.

This doesn’t automatically rule you out. It does mean the case has to be built more carefully, with the single year’s figures supported by other evidence such as retained business bank statements, a signed accountant’s certificate, or a clear explanation of trading history prior to self-employment.

A number of lenders in the specialist and manual-underwriting space will consider one year’s figures on their own merits, provided the numbers are consistent and well documented.

How Do You Get an SA302 from HMRC?

If you file your own Self Assessment return online, you can print an SA302 directly from your HMRC personal tax account once the return has been fully processed. HMRC holds records for up to four tax years, so older documents can usually still be retrieved if a lender asks for them.

If an accountant files on your behalf, they may not have access to print the SA302 in the same way. In that case, they can usually produce an equivalent tax calculation summary that most lenders accept in its place.

SA302 vs Tax Year Overview: What’s the Difference?

Lenders rarely ask for one without the other. Each document confirms a different part of the picture.

Together, they confirm both the figure and the fact that it was settled. On their own, either document only tells half the story.

What If You Only Have One SA302 Because You’re a First-Year Trader?

This is the position a large number of applicants find themselves in, and it’s worth being precise about what it does and doesn’t mean.

Having a single SA302 doesn’t imply the figures are less trustworthy. It simply means fewer years of independent verification exist, which is a fact a lender’s underwriter will need to work around rather than a flaw in your application.

Some lenders will average income across a shorter trading history, others will take the most recent year in isolation if the trend is upward, and a smaller group won’t consider a single year at all. Where you fall in that spread of appetite is exactly the kind of question a Logic Check eligibility and feasibility assessment is designed to look at, without producing a decision, quote, or recommendation at that stage.

What Happens If Your SA302 Doesn’t Match What You Expected?

Discrepancies happen more often than you’d think, usually because of a late adjustment, a change made by an accountant, or a simple filing error.

HMRC allows a standard 12-month window to amend a submitted return online, which for 2024/25 returns runs until 31 January 2027. If you spot an error before a lender reviews your file, correcting it early avoids a delay further down the line.

If the mismatch is spotted after a lender has already requested the document, be prepared to explain it in writing, ideally with an accountant’s note attached.

Can You Get a Mortgage With Only One Year’s SA302 in 2026?

Yes, but the route to it looks different from a standard two-year case. Lending appetite in the specialist and manual-underwriting part of the market extends to applicants with shorter trading histories, provided the figures are consistent and properly evidenced.

A single strong SA302, backed by clean business bank statements and a coherent explanation of your trading pattern, can carry real weight. What matters most is that the numbers tell a consistent story rather than raising more questions than they answer.

Conclusion

An SA302 is a tax calculation summary from HMRC, and lenders want it because it independently confirms the income figures on your mortgage application. For applicants with only one year of trading, the document carries particular importance, since it’s often the clearest evidence available that your declared profit is genuine and accepted by HMRC.

Understanding what an SA302 is and why lenders want it puts you in a stronger position to prepare your file properly, whether you’re presenting one year of figures or two.

Frequently Asked Questions

Do all mortgage lenders ask for an SA302?

Most lenders assessing self-employed income will ask for either an SA302 or an accountant’s equivalent tax calculation. The exact requirement can vary by lender, so it’s worth checking what a specific application expects before submitting documents.

Can I get an SA302 if my accountant files my tax return?

Yes, though your accountant may need to provide an equivalent tax calculation summary rather than the printed SA302, since only the person who submits the return online through their own HMRC account can print it directly.

Is one year’s SA302 enough for a mortgage in 2026?

It can be, depending on the lender and how strong the supporting evidence is. Some lenders will consider a single year’s figures if income is consistent and well documented, while others prefer two years as standard.

How far back does HMRC keep SA302 records?

HMRC typically allows you to download SA302s for up to four tax years through your online personal tax account. Older records may still exist but can require a different retrieval process.

What’s the difference between an SA302 and a Tax Year Overview?

The SA302 shows your calculated income and tax for a given year, while the Tax Year Overview confirms that tax was actually paid to HMRC. Lenders generally want both documents together, not one in isolation.

Why do lenders want an SA302 instead of just my business accounts?

Business accounts reflect figures prepared by you or your accountant, whereas an SA302 is generated from a return already filed with HMRC. Lenders treat the SA302 as independent confirmation that the income presented on your mortgage application matches what’s been declared for tax purposes.

What should I do if my SA302 figures look wrong?

Submitted Self Assessment returns can usually be amended online within HMRC’s standard 12-month window, so it’s worth correcting any error before a lender reviews the document. If the mismatch is spotted later, be ready to provide a written explanation, ideally supported by your accountant.

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The guides and articles on this website are provided for general information only. They are not tailored to your personal circumstances and should not be treated as financial advice or a personal recommendation. If you would like advice based on your individual circumstances, please speak to an adviser.

Mortgage advice is provided by Hayden Richards, CeMAP-qualified, as a Registered Individual of Marklay Mortgages Ltd, which is authorised and regulated by the Financial Conduct Authority (FRN 930490). Richards & Logic is a trading style of MarketMedia Ltd (registered in England and Wales, 07765565).

Hayden Richards, CeMAP — Senior Mortgage & Protection Adviser · Last reviewed: 30 July 2026