Most people lose deductions not because they spent nothing, but because they cannot prove what they spent. A receipt system does not need to be elaborate — it needs to be one you will still be following in November.
Start with the question the tax agency will ask
Every rule about receipts comes down to a single test: can you show what was bought, from whom, when, for how much, and why it relates to earning income? A receipt that answers all five is useful. One that answers three is an argument waiting to happen.
This is why a credit-card statement is not, on its own, a receipt. It proves money moved and where it went, but not what was purchased — and "$340, office supply store" could be a printer for the business or a games console for the spare room. Keep the itemised receipt as well as the statement line.
What is actually worth keeping
The instinct to keep everything creates a box nobody ever opens. Be deliberate instead. Keep anything connected to earning income:
- Purchases and supplies — materials, stock, software subscriptions, tools and equipment.
- Travel — fuel, parking, transit, flights and accommodation, with a note of the purpose of the trip.
- Meals and entertainment — these are frequently only partly deductible and are scrutinised, so note who you met and why.
- Home office costs — utilities, internet and rent, where you claim a portion.
- Professional services — accounting, legal, contractors and subcontractors.
- Vehicle records — a mileage log, which is a record even though it is not a receipt.
Anything purely personal does not belong in the pile at all. The point of a system is not volume, it is being able to find the right document quickly.
The mixed-purchase problem
The awkward receipts are the mixed ones: a supermarket trip containing both office coffee and household groceries, or a phone bill covering business and personal use. Two habits solve most of this.
First, split the payment at the till wherever you can — two transactions, two receipts, no reconstruction later. Second, where splitting is impossible, write the business portion on the receipt immediately and record only that portion in your spreadsheet. A note made at the time is credible; a percentage invented eleven months later is not.
A filing system that survives a year
The system that works is the one with the fewest steps. In practice that means three:
- Capture immediately. Photograph the paper receipt the day you get it, before it fades or goes through the wash. Digital receipts go straight into one dedicated email folder.
- Process weekly. Ten minutes, once a week, converting that week's captures into rows in a single spreadsheet. Our Receipt → Excel tool handles the extraction if you would rather not type; the guide to converting receipts to Excel covers all three methods and the columns worth having.
- Store by month. Image files in folders named by year and month, matching your spreadsheet. Finding "that hardware receipt from March" then takes seconds.
Notice what is absent: no app to learn, no subscription, no new habit beyond a weekly ten minutes. Elaborate systems fail in month four. This one does not, because there is nothing to abandon.
Categories worth separating from day one
Whatever software you eventually use, your categories should map to the lines on the return you will actually file. Inventing your own scheme means re-sorting everything at year end. Keep the list short enough to remember without looking it up, and keep tax in its own column — you will need it if you are registered for GST/HST and claiming input tax credits, and our GST/HST/PST calculator is useful for checking a figure that looks wrong.
Above all, keep business and personal in separate spreadsheets. Not separate tabs — separate files. The temptation to blur them is exactly what makes an audit uncomfortable.
How long records must be kept
Both countries expect you to hold supporting documents for years after filing, not months. In Canada the CRA generally asks that records be kept for six years from the end of the tax year they relate to. In the United States the IRS commonly cites three years, though longer periods apply in particular circumstances — and different rules attach to property, employment records and unfiled or substantially understated returns.
Because those exceptions are where people get caught out, treat the figures above as the general shape rather than your personal answer, and confirm what applies to you with the CRA, the IRS, or your accountant.
Digital images are generally acceptable to both agencies provided they are complete and legible — which is the strongest practical argument for photographing receipts early, since thermal paper can fade to blank well inside a six-year window.
What to do about a missing receipt
It will happen. The honest response is to reconstruct what you can and be transparent about what you cannot:
- Ask the vendor for a duplicate. Most retailers can reprint from a card transaction, and suppliers will reissue an invoice without fuss.
- Check your email and bank. Many purchases generate a confirmation you have forgotten about.
- Write a contemporaneous note with the date, vendor, amount and business purpose, and keep the statement line alongside it. Weaker than a receipt, better than nothing.
- Do not invent one. A fabricated document turns a disallowed expense into something far more serious.
A handful of reconstructed entries in a well-kept year is unremarkable. A whole year of them is a different conversation.
The quiet benefit nobody mentions
Organised receipts do not just protect a deduction — they tell you things. Sorted by vendor over twelve months, they expose the subscription you stopped using in March, the supplier who has quietly raised prices, the category that has doubled without you noticing. Most people build a receipt system for the tax agency and end up keeping it for themselves, which is a decent test of whether a system is any good.
If you want to see how the deductions actually affect what you owe, our Canada and US income tax calculators show how reducing taxable income moves the final figure.
Frequently asked questions
Do I need to keep paper receipts if I have digital copies?
Both the CRA and the IRS generally accept digital images provided they are complete and readable. Many people photograph everything and keep the paper only until the return is filed. Because requirements vary by record type, confirm your situation with the relevant agency or your accountant before discarding originals.
Is a bank or credit card statement enough on its own?
Usually not. A statement shows the amount and the vendor but not what was bought, which is the part that establishes the expense was business-related. Keep the itemised receipt as well.
How should I handle a receipt that is part business, part personal?
Split the payment at the till if you can. If you cannot, note the business portion on the receipt at the time of purchase and record only that portion. A note made on the day carries far more weight than a percentage estimated at year end.
What is the fastest way to get a year of receipts into a spreadsheet?
Work month by month rather than tackling the whole box. Photograph each month's receipts, extract them with our Receipt → Excel tool, check the rows, then move to the next month. Breaking it into twelve small jobs is what makes a backlog finishable.
Can I claim an expense if I lost the receipt?
You may still be able to, but the claim is weaker and could be disallowed if questioned. Try to obtain a duplicate from the vendor first, and otherwise keep a dated note of the purpose together with the corresponding bank or card entry.
This article is general information, not financial, tax, or medical advice. See our disclaimer.