The SA302 tax calculation and tax year overview documents are commonly used as evidence of income for loan or mortgage purposes for the self-employed. The forms have become more widely used since the mortgage rules have required evidence of income for the self-employed. The SA302 provides this evidence for the last four years Self-Assessment tax returns.

The SA302 shows the breakdown of the income returned on the taxpayer’s tax return, including commercial versions. The tax year overview confirms the tax due from the return submitted to HMRC and shows any payments made, cross referencing the Tax Calculation with HMRC records.

Self-Assessment taxpayers can use HMRC’s online service to request an SA302 tax calculation. It takes 72 hours after an online tax return has been submitted before the documents are available to print.

Most lenders will accept a SA302 printed from online accounts or from the commercial software used to submit returns. HMRC has been working with the Council of Mortgage Lenders and their members to increase the number of lenders who will accept self-serve copies.

Source:HM Government| 10-07-2023

If you need help obtaining or presenting SA302 tax calculations and tax year overviews for mortgage or loan applications, expert support can make the process much smoother. The team at CIGMA Accounting regularly assists self-employed individuals and contractors, ensuring income documentation is accurate, complete, and accepted by lenders.

We support clients across Kingston Upon Thames, including nearby areas such as Berrylands and Tolworth, providing clear guidance on Self-Assessment submissions, SA302 requests, and lender requirements.

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CIGMA Accounting
CIGMA Accounting Ltd is a forward-thinking accounting and tax firm based in London, dedicated to delivering high-quality compliance, tax planning, and business advisory services to entrepreneurs, landlords, and growing SMEs. With offices in Wimbledon and Farringdon, we combine local expertise with a tech-driven approach to simplify accounting. Our services include corporation tax filing, VAT compliance, HMRC investigation support, R&D tax credit claims, capital allowances optimisation, and bookkeeping automation. What sets CIGMA apart is our ability to blend traditional accounting rigour with AI-powered systems that reduce errors, save time, and provide real-time financial insights. Our team ensures that every client - from startups to high-net-worth individuals - receives a bespoke solution aligned with their growth goals. Whether you need strategic tax planning, help with HMRC disclosures, or a full outsourced finance function, CIGMA Accounting delivers clarity, compliance, and confidence.