Every business asks how long to keep invoices at exactly the wrong moment, which is when somebody has asked for one from four years ago.
The answer varies by country, but the shape of it does not: several years, both what you issued and what you received, and in a form somebody else can read.
Typical periods
Common retention requirements for business records sit between five and seven years. Some jurisdictions run longer for particular records, and periods can extend where an assessment is open or a dispute is unresolved.
Check the rule where you trade rather than trusting a general figure, including this one. Your tax authority publishes it and an accountant will confirm it in a sentence.
Both directions
People keep what they issued and lose what they received. Both matter, and the received side is usually the one that reduces a tax bill.
- Invoices you issued, and the receipts that closed them.
- Invoices and receipts from suppliers.
- Credit notes, in both directions.
- Delivery notes and goods received notes, where quantities could be questioned.
- Purchase orders and accepted quotes, which are the evidence behind a disputed figure.
Bank records and contracts sit alongside these, but the documents above are the ones generated day to day.
What counts as a copy
Most authorities accept digital copies, provided they are complete, legible and unaltered. A PDF of the document you sent is normally fine. A photograph of a crumpled receipt is usually acceptable if it is readable, and often is not.
Where a signature is the point, keep the signed version rather than the blank one you printed from.
The obligation is on you. No tool, including this one, keeps anything on your behalf, which is why the privacy page is short.
Keep the editable file too
Not required, but useful. The saved sheet reopens, so a query about an old invoice can be answered by looking at the real document rather than reconstructing it.
It also means a customer asking for a duplicate takes seconds. Organising your invoice files covers keeping both copies without effort.
Structure beats volume
Seven years of files with no structure is the same as no files at all when somebody asks for a specific one.
Year folders, sortable names, one archive directory. Retrieval, not storage, is the thing that fails.
Back it up somewhere else
A retention obligation is not met by a single laptop. Whatever the requirement is where you trade, it assumes the records still exist.
One synced copy or one external drive updated at month end is enough for most small businesses.
Do not tidy too early
The instinct at year end is to clear out. Resist it for anything inside the retention window, and be particularly careful with records attached to an unresolved query, since those often need keeping past the normal period.
Archiving costs almost nothing. Deleting is the only irreversible option on the list.
What to keep beyond the invoice itself
An invoice on its own answers what was charged. It does not answer what was agreed, delivered or approved, and those are the questions that arrive years later.
Keep the supporting documents with it:
- The accepted quote or estimate, which is the evidence behind the figure.
- Any signed job card, which is the evidence the work happened.
- The delivery note, which is the evidence the goods arrived.
- Written approval for anything added mid-job.
Together those turn a disputed invoice into a five minute answer. When an invoice is disputed covers using them.
Formats that will still open
A PDF will open in ten years. A proprietary file from a service that has since closed may not.
That is one of the reasons the sheets here save as plain files you hold: the PDF is readable by anything, and the saved sheet is a text file you could read in a plain editor if you ever had to.
Avoid keeping the only copy of anything as a screenshot in a messaging app.
Legibility counts
A receipt printed on thermal paper fades, sometimes within a year, and a faded receipt is not a record. Photograph or scan thermal receipts when you file them rather than when you need them.
The same applies to anything handwritten and signed on site. Scan it the week it is signed.
Do not rely on a customer or supplier keeping theirs
Your obligation is yours. A supplier who can reissue an old invoice is a convenience, not a plan, and businesses close.
If you are missing something from a prior year, ask now rather than at the point somebody requires it.
Deleting, when the time genuinely comes
When a year falls outside the retention window and has no open matter attached, you can clear it. Do it deliberately, one year at a time, and keep a note of what was removed and when.
Most small businesses find the storage is trivial and simply keep everything, which is a defensible answer.
Start with the current year
If the back catalogue is a mess, do not start there. Set up the folder properly for this year, then move older material in when you have an afternoon.
Open the invoice maker, save your template, and file the next one properly. Consistency from today beats an archaeology project you will not finish.