Mastering the Numbers of International Trade: Import Export Accounting Explained

Importing and exporting puts more moving parts into your books than almost any other kind of business. Every shipment involves supplier invoices, freight, customs duties and often a second currency, and each of those numbers ends up on your tax return. That is why many trading businesses work with an import export accountant instead of handling the books alone.

The work has also become harder since 2024. Canada has a new customs accounting system, tariffs between Canada and the United States have changed several times, and cross border transactions get more attention from tax authorities than they used to. If you ship goods overseas or bring products into the Greater Toronto Area to resell, good import export business accounting in Toronto protects your margins and keeps you in good standing with the Canada Revenue Agency (CRA) and the Canada Border Services Agency (CBSA).

Understanding Import-Export Accounting

Import-export accounting is the tracking of financial transactions for goods and services that cross international borders. It covers purchases, sales and inventory, plus the costs of logistics, duties and tariffs. Done properly, it keeps a business compliant with trade and tax rules and helps it avoid expensive mistakes.

The main difference from everyday bookkeeping is timing. A container can leave a supplier’s warehouse in one month, clear customs in the next and be paid for in a third, sometimes in a different currency at each step. The shipping terms in your contract, known as Incoterms, decide when ownership of the goods passes from seller to buyer. That date decides when the inventory goes on your books, when you can record a sale, and who pays for freight, insurance and duties.

Imported products also cost more than the supplier’s invoice suggests. Accountants call the full figure the landed cost: the purchase price plus freight, insurance, customs duties, brokerage fees and any other charges to get the goods to your warehouse. A business that tracks landed cost knows its real margin on each product. One that only looks at the invoice price can end up selling some items at a loss without noticing.

What Has Changed Since 2024

Three changes in the last two years affect how Canadian importers and exporters should keep their books.

CARM is now the official customs system

On October 21, 2024, the CBSA Assessment and Revenue Management system (CARM) became the official system for accounting for imported goods and paying duties and taxes. Importers now manage their own accounts in the CARM Client Portal and receive a monthly statement of account. They can no longer use a customs broker’s security to get goods released before paying duties. Since May 2025, any importer that wants release before payment has had to post its own financial security. More of the paperwork and payment timing now sits with the business rather than the broker.

Tariffs keep changing

Since early 2025, the United States and Canada have introduced, removed and reintroduced tariffs on a long list of goods. As of September 8, 2026, Canada charges counter-tariffs of 15%, 25% or 50% on more than 700 products of U.S. origin, in addition to earlier measures on steel, aluminum and automobiles. Every change moves your landed costs and margins. Some businesses may also qualify for refunds on tariffs they paid in the past, but only if their records show which duties were paid on which shipment.

CUSMA is under review

The Canada-United States-Mexico Agreement is going through its scheduled joint review in 2026. Goods that qualify under CUSMA can face very different duties from goods that do not, so importers need clear records of where their products and components were made.

The Role of an Import Export Accountant in Toronto

A corporate tax accountant who works with trading businesses does more than prepare a year-end return. Here is where an import export accountant makes the biggest difference.

Tax compliance and planning

Your accountant makes sure the business meets Canadian tax rules on cross border income and plans ahead to reduce the tax it owes. For importers, that includes recovering the GST paid at the border through input tax credits and reporting foreign exchange gains and losses correctly on the corporate return.

Financial reporting

Good decisions need good numbers. For a trading business, that means reports that show the margin on each product, supplier or market after duties, freight and currency costs are added in, not just total sales.

Keeping up with the rules

Tariff lists and customs procedures now change several times a year. An accountant who follows these changes can tell you when a new rule affects your costs or your filings, often before your next shipment lands.

Reconciling customs and your books

The duties and taxes on your CBSA statement of account should match what is in your accounting records. When customs entries, supplier invoices and bank payments do not line up, the result is usually overpaid duty or a reassessment later. Regular reconciliation catches these gaps while they are still easy to fix.

What Import-Export Accounting Covers

Inventory, including goods in transit

You need an accurate count of stock on hand and stock still on the water or in a warehouse abroad. This keeps you from over-ordering or running out, and it matters at year end, because the value of your inventory directly changes the profit on your corporate tax return.

Landed cost

Knowing what each product really costs, with transportation, duties and tariffs included, lets you set prices that stay profitable. With tariff rates moving as often as they have, landed cost should be recalculated whenever a duty changes, not once a year.

Foreign currency

Most trading businesses deal in more than one currency. An accountant can help you plan for exchange rate swings so they do less damage to your margins, and will make sure every foreign amount is converted to Canadian dollars using a method the CRA accepts.

Customs documents

Customs brokers usually prepare the clearance paperwork, but your books still depend on it. Bills of lading, commercial invoices, certificates of origin and the Commercial Accounting Declarations that replaced the B3 form under CARM should all be kept on file and matched to your records.

Your import export account

Before a business can import or export commercial goods, it needs an import-export program account, called an RM account, linked to its CRA business number. CBSA uses this import export account to track your shipments, duties and payments. It has to stay active, give the right access to your broker, and be reconciled to your accounting records.

GST/HST on imports and exports

Commercial importers usually pay GST to CBSA when goods cross the border. A business registered for GST/HST can generally claim that tax back as an input tax credit, provided the customs paperwork supports the claim. 

Most exported goods are zero-rated, so you charge foreign customers no GST/HST but can still claim credits on your own business expenses. Missing either side means paying more tax than you owe.

Accounting for Import Export Business in Toronto

Toronto has thousands of trading businesses, from online sellers bringing in products from Asia to distributors shipping across North America. Their accounting has to handle things a local service business never sees.

The first is dealing with two government agencies. Most businesses report mainly to the CRA, but importers and exporters also report to CBSA, and the numbers given to each need to agree. 

The second is that costs arrive in pieces. One shipment can produce a supplier invoice, a freight bill, a broker’s invoice, a duty charge and a bank fee, often weeks apart, and each has to be matched to the right stock.

Many Toronto importers also sell locally, which means charging 13% HST on Ontario sales while recovering the GST paid at the border. The two processes are easy to mix up. Add foreign currency payments and the extra attention cross border transactions draw in an audit, and it is clear why import export business accounting in Toronto is best handled by an accountant who works with trading companies regularly.

Why Work With a Professional

A corporate tax accountant in Toronto who knows international trade brings experience that is hard to build in-house. They have seen the common mistakes, from misclassified goods to missed tax credits, and know how to avoid them.

That experience lowers your risk. Accurate records and correct filings mean fewer penalties, less interest and fewer surprises when the CRA or CBSA asks questions.

It also helps with planning. Clear reports show which products and suppliers are actually profitable, so you can react when a tariff changes or the dollar moves, whether that means switching suppliers or adjusting your prices.

Finally, it saves time. Reconciling customs statements, converting currencies and preparing tax filings can take hours every month. Handing that work to an import export accountant lets you spend those hours running the business.

Let Webtaxonline File Your Corporate Taxes

Everything covered above comes together once a year in your corporate tax return. For an import-export business, the T2 return has to account for foreign exchange gains and losses, inventory in transit, duties and tariffs, GST/HST recoveries and cross border income, all converted and reported the way the CRA expects. Off-the-shelf tax software is not built for that. A single missed adjustment can mean paying more tax than you need to, or a reassessment with interest and penalties a few years later.

At Webtaxonline, our accountants work with Toronto importers and exporters every day. We prepare and file your corporate tax return, reconcile your trade transactions, and make sure you claim the credits and deductions you are entitled to.

Don’t take the risk of filing your corporate taxes yourself. 

Contact Webtaxonline today, and our import export accountants will handle your corporate tax return from start to finish.

Frequently Asked Questions

How should an import-export business track international sales and expenses?

Record every sale and expense in its original currency and in Canadian dollars, and link each one to the shipment it belongs to. Supplier invoices, freight, brokerage, duties and bank fees should all be matched to the right inventory, and export sales recorded when ownership passes under your shipping terms. Accounting software with multi-currency support helps, and a monthly reconciliation keeps the records accurate.

How does accounting for an import-export business in Toronto differ from regular business accounting?

It adds customs, currency and cross border tax to normal bookkeeping. A Toronto importer has to reconcile CBSA duty statements, recover GST paid at the border, charge 13% HST on Ontario sales, convert foreign currency transactions and work out the landed cost of every product. Most local businesses deal with none of this, which is why accounting for import export business in Toronto usually calls for a specialist.

How should businesses account for foreign currency transactions?

Convert each foreign amount to Canadian dollars at the exchange rate for the day of the transaction. The CRA generally expects the Bank of Canada rate, though it accepts some other reliable sources if you use them consistently. If you later pay a supplier or receive payment at a different rate, the difference is a foreign exchange gain or loss. It is recorded separately and affects your taxable income. The CRA does not usually accept average rates when exchange rates have moved sharply.

Can an import-export accountant help manage cash flow and international payments?

Yes. An import export accountant can forecast when duties, supplier payments and customer receipts will hit your account, plan around the timing of CBSA’s monthly statement, and show how currency movements change what you owe. They can also help you choose between payment methods, such as wire transfers or letters of credit, based on cost and risk.

How can proper import-export business accounting help prevent costly financial errors?

Accurate books catch problems early, while they are still cheap to fix. Common errors include paying duty under the wrong tariff classification, missing GST input tax credits, using the wrong exchange rate and undervaluing inventory. Any of these can lead to overpaid tax, reassessments, interest or penalties. Regular reconciliation and a professional review of your import export business accounting in Toronto prevent most of them.