How long do you need to keep utility bills in Canada?

Short answer: if a utility bill supports a claim on your tax return, keep it six years from the end of the tax year it relates to. If it never touches a return, the CRA has no rule for it, and about a year for your own reference is plenty.

Utility bills sit in an odd spot: for most households they are throwaway paperwork, but the moment one supports a tax claim it becomes a record the CRA can ask to see. The difference is worth getting right, because the two cases point in opposite directions.

Six years, if you claim the bill

Three common situations turn a household bill into a supporting document:

• You work from home (self-employed). A reasonable share of heat, electricity, and water is part of the business-use-of-home calculation on Form T2125. The bills are the evidence for the claim.
• You have rental income. Utilities you pay for a rental are a routine expense against rental income, and the bills back the numbers.
• Your employer requires you to work from home and you claim home-office expenses as an employee: the same logic applies to the eligible portion.

In all of these, the retention rule is the standard one: six years from the end of the tax year the record relates to (CRA: how long to keep your records). A 2025 hydro bill claimed on your 2025 return needs to survive until the end of 2031.

No CRA rule, if you never claim it

If a bill never supports a claim, there is no CRA retention requirement for it. Common practice is to keep bills for around a year, enough to dispute a billing error, compare rates, or prove your address, and then let them go. That is a convenience choice, not a compliance one.

Keep the copy digital

Paper bills and receipts printed on thermal stock do not survive a six year window on their own. Here is why they fade, and what keeps them readable.

The CRA accepts a properly captured digital image as the record (acceptable format and imaging), and unlike thermal receipts, utility bills usually arrive as PDFs you can simply save. If yours come on paper, a clear photo does the same job. Either way, six years of bills takes no drawer space at all.

The takeaway

• Claimed on a return (home office, rental, employment home-office): keep six years from the end of the tax year.
• Never claimed: no CRA rule; about a year for your own reference is common.
• A legible PDF or photo counts as the record, and it is the version that survives.

Common questions

How long do you need to keep utility bills in Canada?

It depends on whether they support a tax claim. If a bill backs a home-office, self-employment, or rental claim, keep it six years from the end of the tax year it relates to. If you never claim it on a return, the CRA has no retention rule for it, and most households keep bills about a year for their own reference.

Do utility bills count as tax records?

They do the moment they support a claim. A share of heat, electricity, and water is a common part of the business-use-of-home calculation for the self-employed, and utilities are a routine expense against rental income. Once claimed, the bill is a supporting document the CRA can ask for.

Is a photo or PDF of a utility bill enough?

Yes. The CRA accepts properly captured digital images as records, and most utility providers offer PDF bills. A legible digital copy that shows the provider, date, and amount does the job, and it survives longer than paper.

Can you get old utility bills from your provider?

Usually, but not indefinitely. Most providers let you download 12 to 24 months of bills online; older statements can require a support request and sometimes a fee. That is why saving the bill when it arrives beats reconstructing it years later.