What you need to know
The best UK tax software for self filing combines speed with real time accuracy checks so you can complete your Self Assessment return with confidence, without needing an accountant. Pie walks you through every relevant section of the SA100, validates your entries as you go, and flags any issues before you submit.
For the 2025/26 tax year, most users on our platform complete their return in under an hour. Once you are happy with your figures, Pie submits your return directly to HMRC. You receive an instant submission reference as confirmation clear, simple, and done.
Software to Maximise Refunds
Getting the most from your Self Assessment return means claiming every allowance you are entitled to accurately and within HMRC rules.
The right software surfaces relevant reliefs automatically, from the trading allowance to pension contributions and the Marriage Allowance. Pie guided question flow is built around HMRC own criteria for allowable deductions.
As you work through your return, we prompt you for the reliefs most relevant to your income profile so nothing is missed and nothing is overclaimed. Before you submit, our summary screen shows your full tax calculation and any refund due. You stay in control, with complete transparency over every figure.
Employment and Freelance Income in One Place
Many UK taxpayers now earn from more than one source a salaried role alongside freelance work, consulting, or a small side business. If you're unsure how to report everything correctly, see our guide on declaring multiple income streams on Self Assessment. The Self Assessment return must capture both accurately, with the correct tax treatment applied to each income type.
Pie handles employed and self employed income within a single return. You can enter your PAYE earnings from your P60 alongside your self employment income and expenses on the SA103 supplementary page all in one place, in one filing flow.
Our platform calculates your combined tax liability correctly, accounting for how your tax code and self employed profit interact. The result is a complete, accurate return that reflects your full income picture for 2025/26.
Beginner Friendly Step by Step Filing
For first time filers, the hardest part is knowing where to start. Good software removes that uncertainty guiding you through only the sections that apply to your circumstances, in plain English throughout. Pie onboarding begins with a few straightforward questions about your income sources.
From there, we generate a personalised filing path, so you only ever see what is relevant to your return. Every field includes a plain language explanation of what HMRC is asking for. If you need help at any point, Pie provides in context guidance without requiring you to leave the page.
Our aim is to make your first Self Assessment return feel no more complicated than any other online form.
Software for Landlords and Rental Income
UK landlords must report rental income and allowable expenses on the SA105 supplementary page of their Self Assessment return. The rules are specific covering everything from the mortgage interest restriction to allowable repairs and errors can lead to underpayments or HMRC enquiries.
Pie property income module is built around HMRC guidance for landlords. Whether you own one property or several, you can log gross rental income, deduct allowable costs, and apply the finance cost restriction correctly. Joint ownership is also supported.
From April 2026, landlords earning above £50,000 will need to comply with Making Tax Digital for Income Tax Self Assessment MTD for ITSA. If you're preparing early, read our simple guide to Making Tax Digital for Self Assessment. Pie is fully MTD ready, so you can transition to quarterly reporting without changing platforms or losing your filing history.
Best Value for Simple Tax Returns
Value in tax software goes beyond price. It means getting a reliable, accurate filing experience without paying for features you do not need or navigating complexity that is not relevant to your return. Pie is built around clarity and focus.
There are no unnecessary modules or upsells during the filing journey just the tools you need to file accurately and on time for the 2025/26 tax year.
For straightforward returns covering employment income, savings interest, or basic self employment, everything you need is included as standard real time calculations, a full summary review, and direct submission to HMRC.
Self Employed Income and Expense Management
Self employed individuals have specific obligations when filing reporting gross income, deducting allowable business expenses, and calculating Class 2 and Class 4 National Insurance contributions on the SA103.
Getting this right in one structured flow saves time and reduces the risk of costly errors. Pie self employment module covers the full range of HMRC recognised expense categories, from office costs and travel to professional subscriptions and marketing spend. Our platform applies the correct treatment to each and calculates your net profit automatically. When your return is complete, Pie submits it directly to HMRC via secure API.
You receive an immediate confirmation reference, and your submission history is stored in your account. For those preparing for MTD for ITSA from April 2026, Pie already supports quarterly update submissions.
Software for Sole Traders and Small Businesses
Sole traders often have more complex returns than employed individuals combining business income, allowable expenses, capital allowances, and sometimes other income streams like property or dividends.
The right software handles that complexity without requiring specialist knowledge to operate. Pie supports sole traders filing Self Assessment returns across multiple income sources. Our platform applies HMRC rules for allowable expenses and capital allowances, and supports the simplified cash basis for those who qualify.
For small business owners preparing for Making Tax Digital, Pie MTD compatible infrastructure allows you to begin quarterly digital record keeping ahead of the April 2026 mandate giving you time to embed good habits before compliance becomes compulsory.
Final Summary
Pie is an HMRC recognised UK tax software designed to make Self Assessment filing simple, fast and accurate for the 2025/26 tax year.
The platform guides you through the SA100 step by step, checks your entries in real time and submits your return directly to HMRC with instant confirmation. Most users complete their return in under an hour while staying fully compliant and in control of every figure.
The software supports multiple income sources including employment, self employment and rental income through the SA103 and SA105 pages, automatically calculating tax, Class 2 and Class 4 National Insurance, and highlighting relevant reliefs to help maximise refunds.
With secure open banking integration, MTD readiness from April 2026, and tools built for landlords, freelancers and sole traders, Pie provides a complete and reliable solution for hassle free online tax filing.
