Freelancing in the UK comes with a lot of paperwork nobody warned you about. Here is a plain-English rundown of what you actually need to know.
The documents you must have (legally)
Invoices — you are required to include specific information on invoices if you are VAT-registered. Even if you are not, including your full name (or business name), address, unique invoice number, date, description of services, and payment terms protects you legally.
Contracts — not legally required, but any dispute without one is much harder to win. Even a short email confirming scope, price, and payment terms counts.
Records — HMRC requires you to keep records for at least 5 years after the Self Assessment deadline. Digital is fine. Shoebox is not.
The documents that protect you (but most freelancers skip)
Client questionnaire — scope creep kills freelance margins. A short intake document that pins down deliverables, revision rounds, and out-of-scope items saves arguments later.
Project proposal — separate from the contract. Sets expectations before you start. Useful to refer back to when a client "remembers" things differently.
Late payment notice — a formal document stating that statutory interest under the Late Payment of Commercial Debts Act 1998 is now accruing. Most clients pay immediately when they receive one.
Letter before action — the formal precursor to small claims. You can write it yourself. It does not need a solicitor. It just needs to state the amount owed, the deadline, and your intention to file.
The ones worth templating
If you are billing regularly, the documents you will reuse most:
- Invoice (obviously)
- Contract (short form for small projects, long form for large ones)
- Scope of work
- Late payment escalation sequence (reminder → interest notice → letter before action)
The Freelance Starter Kit (£9) includes templates for all of these — editable Word/Google Docs versions.
Which document has saved you from a bad situation? I am curious what people actually use in practice.
Top comments (0)