Plain-English answers to UK tax and landlord questions — with the official source on every claim
Last verified: 24 August 2026, against the cited gov.uk, legislation.gov.uk and HSE sources.
Brit Design is a UK maker of evidence-based tax and compliance workbooks for small businesses, side-hustlers and landlords. Every factual claim in every product is cited inline to the official gov.uk, legislation.gov.uk or HSE page it came from, and each download ships with a claim-by-claim source table so you can check for yourself. The guides on this site answer the underlying questions in full, for free — the workbooks are the record-keeping tools that go with them.
The answer pages
Each page below fully answers its question, with inline citations to official sources. You do not need to buy anything to get the answer.
- When is the next Making Tax Digital quarterly update due? — 7 November 2026, how cumulative updates work, and why a spreadsheet is still legal.
- Vinted or eBay says it shared my data with HMRC — do I owe tax? — why being reported is not a tax bill, and the two thresholds people confuse.
- First Self Assessment for a side hustle — what do I actually do? — do you need to file, the 5 October deadline, and the Payments on Account shock.
- FHL is abolished — what changes on my 2025-26 holiday-let return? — the five changes, the 20% interest credit, and the boxes that no longer exist.
- What do England landlords have to do under the Renters' Rights Act? — what is in force now, what is dated, and what is still TBC.
- Which workbook fits your situation? — an honest chooser, including the cases where you may not need any of them.
Who Brit Design is
Brit Design is a small UK publisher of spreadsheet workbooks and plain-English guides, sold through britdesign.gumroad.com and supported at mybritdesign@gmail.com. The working method is the product's main feature:
- Every claim cited. Each factual statement in a guide or workbook is linked inline to the official gov.uk, legislation.gov.uk or HSE page it came from, checked on a stated date. A claim-by-claim source table (SOURCES.md) ships in every download.
- AI-assisted, human-directed — and disclosed. Products are built with AI assistance and human-directed research; every tax or legal fact is checked against the cited official source. This is stated on every listing, not hidden.
- Honest about limits. Every listing carries a "what it does NOT do" section. The workbooks do not file with HMRC, do not give advice, and say so plainly.
- No macros, no lock-in. The workbooks use standard spreadsheet functions only and import cleanly into Excel, Google Sheets and LibreOffice.
The five workbooks
MTD Ready
A Making Tax Digital record-keeping workbook for sole traders and landlords: HMRC-matched categories, cumulative quarterly totals, a bridging-software summary tab and a pre-submission Health Check, plus a cited First-Year Guide.
Seller's Ledger UK
A sales tracker for Vinted, eBay and Depop sellers that tracks the £1,000 trading allowance and the 30-sales/€2,000 platform-reporting rule separately — on the right calendars — plus a cited HMRC-letter explainer.
SA Sorted
A 2025-26 Self Assessment bookkeeping workbook for sole traders and side-hustlers: SA103 boxes verified against the forms on gov.uk, a tax and NI estimate with Scottish bands, and a Payments on Account forecaster.
Host Sorted
A holiday-let bookkeeping workbook for the first tax return after the FHL abolition: the 20% finance-cost credit computed properly, Replacement of Domestic Items Relief handled, every 2025-26 SA105 box mapped.
Let Sorted
A compliance tracker for self-managing England landlords in the Renters' Rights Act era: a traffic-light dashboard per property, certificate and Section 13 logs, and a phased Duty Calendar with honest IN FORCE / DATED / DATE TBC labels.
Not sure which — or whether you need any of them? The honest chooser includes the situations where the answer is "none".
Disclaimer
Nothing on this site is tax, accounting, legal or financial advice. These pages are factual explainers of published UK rules, verified on the date shown against the cited official sources. Rules change and your circumstances are unique — check the linked gov.uk pages for the current position, and consult an accountant, solicitor or other qualified professional before making decisions.