Contractor Tax Prep Checklist: Receipts, HST and Mileage

Be honest. Where are your receipts right now?

Some are in the glovebox. A few on the dash. One's probably still in your jacket pocket from that lumber run in November. A couple went through the wash. And somewhere in your email inbox is a PDF from a supplier that you meant to save but didn't.

This is tax season for most contractors. It's the annual scramble — and every year it costs you money.

Why Contractor Receipt Management Is Such a Disaster

It's not because you're disorganized. It's because organizing receipts is a thing you do when you're not busy, and a good contractor is always busy.

During the year, you're on the tools. You're managing jobs. You're dealing with suppliers, clients, equipment, sub trades. Nobody stops mid-job to carefully file a Home Depot receipt into the right folder.

So it piles up. All year. And then March hits and suddenly it's a problem.

That's money you spent. Money you're entitled to claim. Just gone because of a pile in the glovebox.

What Your CPA Is Actually Charging You Extra For

Here's something accountants won't always say out loud: they charge more when you show up with a mess.

If you walk in with a shoebox of receipts and a rough spreadsheet, they're spending billable hours sorting your chaos before they can even start on your taxes. That's hours you're paying for that have nothing to do with actual tax strategy or optimization.

An organized client — receipts categorized, job expenses tracked, expenses clearly separated from personal — takes way less time. That's a lower bill. And they get more out of their accountant because the accountant isn't just doing data entry.

The work you don't do during the year becomes expensive work your CPA does in March.

What Contractors Can Actually Deduct

Before you give up and just submit whatever you can find, here's a reminder of what you're probably leaving on the table as a self-employed contractor:

• Vehicle expenses — fuel, maintenance, insurance (business use percentage)
• Tools and equipment — purchases and repairs
• Materials — anything you bought for a specific job
• Work clothing and PPE — boots, gloves, safety gear
• Cell phone — business use portion of your bill
• Business meals — when you're meeting clients or subcontractors
• Insurance premiums — business liability, tools coverage
• Advertising and marketing — website, business cards, online ads
• Professional fees — accountant, bookkeeper, licensing fees
• Home office — if you do any work from home (calculating quotes, admin)

Every one of these requires a receipt. And receipts you can't find are deductions you can't claim.

The Practical Fix for This Year

If you're already in scramble mode, here's how to salvage what you can right now:

Step 1: Find everything you have

Glovebox. Jacket pockets. Desk drawer. Email inbox (search "invoice", "receipt", "statement"). Credit card and bank statements — these are your backup if receipts are missing. Pull it all together in one place before you sort anything.

Supplier invoices that came by email are easy to lose under everything else. When you find one, check your bank statement to confirm you actually paid it and when, so it lands in the right tax year.

Step 2: Get it digital

Photo every physical receipt now. Even the faded ones, even the crumpled ones. A photo is better than nothing. Free apps like Google Drive or even your phone camera roll are fine for now — you just need them captured.

Most store receipts are printed on thermal paper, and they fade — faster if they sit on a hot dashboard all summer. A photo taken the day you get the receipt is the one that will still be readable in March. For more on building that habit, see how to track receipts as a contractor in Canada.

Step 3: Categorize before you give it to your CPA

You don't need a fancy system. Even a rough sort helps: materials, tools, vehicle, phone, misc. Your accountant will love you for it — and charge you less.

Step 4: Check your bank and card statements

If a receipt is gone but the transaction is on your statement, you still have a record. Not ideal, but better than zero. Your CPA can work with statement evidence for most expenses.

Get Your HST in Order

If you're registered for HST, tax time is also when missing receipts hurt twice. The HST you paid on business purchases can be claimed back as input tax credits, but only if you can back it up. Keep the receipts and supplier invoices that show the HST charged, and for larger purchases make sure the supplier's GST/HST registration number is on them.

Keep the HST you charge clients (13% in Ontario) separate in your head and ideally in your bank account. It isn't your money — it's owed to CRA when you file your HST return.

Back Up Your Vehicle Costs With a Mileage Log

If you're self-employed and use your truck for work and personal driving, you don't claim a flat rate per kilometre. That per-km rate is what employers pay employees as an allowance. You claim your actual vehicle costs — fuel, insurance, repairs, licence and registration, and interest or lease payments — multiplied by your business-use percentage.

That percentage comes from a logbook: date, where you went, why, and kilometres driven, plus your odometer reading at the start and end of the year. No log means your business-use number is a guess, and a guess is hard to defend. We cover how to keep one without much effort in our CRA mileage log guide for self-employed contractors.

The Checklist

Before you sit down with your accountant, run through this:

• Every receipt found, photographed and roughly sorted by category
• Emailed supplier invoices pulled out of your inbox and matched to payments
• Bank and credit card statements for the full year
• HST charged on your invoices and HST paid on purchases, if you're registered
• Mileage logbook with start and end odometer readings for the year
• Vehicle costs for the year: fuel, insurance, repairs, licence, and interest or lease payments
• Business and personal expenses kept separate

If you want the year-round version of this, see how to track business expenses as a self-employed contractor.

How to Stop Doing This Every Year

The scramble is a symptom of not having a weekly system. When receipts get handled weekly instead of annually, tax season stops being a crisis and starts being just another couple hours with your accountant.

The simplest system is: every week, photo and categorize your receipts. Takes 10 minutes. Over the year, it saves you hours of scrambling — and real money in deductions found that would otherwise disappear.

The reason most contractors don't do it isn't laziness. It's that nobody's set up that rhythm for them. It just never happens unless something forces it.

The best time to start was January. The second best time is right now — even if you only capture the next nine months of the year and fix the current mess as best you can.