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Checking for Unpaid CRA, GST and Payroll Debts Before Buying (Alberta)

Learn how GST works in an Alberta business sale, why unpaid CRA debts matter to a buyer, and what to ask for to protect yourself before you close.

Buying & Selling a Business5 min readTSLBy the Treadstone Law Team · AlbertaUpdated November 6, 2026
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Key takeaways
  • GST at 5% can apply to parts of an Alberta business sale unless a valid joint election is made.
  • The election uses CRA form GST44 and is not available where the seller is a registrant and the buyer is not.
  • Seller tax debts are a risk to check before closing, and a lawyer or accountant can confirm how they may affect your deal.

When you buy a business, you want to know whether the seller owes the Canada Revenue Agency money for GST, payroll source deductions or corporate tax. Those debts can affect the value of what you are buying and, depending on how the deal is built, may become your problem.

This article covers the GST rules for business sales in Alberta, how to look into the seller's tax position, and how to protect yourself in the agreement. Whether a particular debt follows the business depends on the facts, so confirm it with a lawyer or accountant.

This article covers the law of Alberta.

Why unpaid tax debts matter to a buyer

Taxes owed by the seller are a hidden cost. Unpaid GST, payroll deductions withheld from employees' pay, or corporate income tax are all worth checking before you close, and how any of them affects you depends on your situation. A buyer could face questions about the business's assets, or a surprise after closing.

Whether the debt stays with the seller or reaches you depends on the structure. In a share purchase you buy the shares of the company rather than selected assets, and how the company's existing tax position affects you depends on the facts. In an asset purchase you generally buy selected assets rather than the company itself, and how a seller's tax debts apply to that depends on the facts. A lawyer or accountant can tell you how this applies to your deal.

How GST works in a business sale

The business-assets rule under Excise Tax Act s.167(1) applies where a supplier sells a business or part of one and the buyer gets all or substantially all of the property that can reasonably be regarded as necessary to carry on that business.

Without an election, each property and service in the sale is treated as a separate supply with consideration allocated to it, so GST (5% in Alberta) can apply to the taxable parts. Alberta has no provincial sales tax.

The going-concern exemption works through a joint election by the supplier and the recipient, made in the prescribed form with the prescribed information. If the election is valid, no tax is payable on the supplies under the agreement, except that tax is still payable on a taxable service the supplier will render, on a taxable lease, licence or similar supply of property, and, where the buyer is not a registrant, on a taxable sale of real property. The CRA form is GST44, 'GST/HST Election Concerning the Acquisition of a Business or Part of a Business'.

Limits on the GST election

Check the filing instructions on the CRA form itself before relying on any deadline, and have an accountant confirm that your GST treatment is right.

Checking the seller's tax position and protecting yourself

Registry searches cover corporate and personal property records, and tax matters call for a different approach. Instead, you ask for proof and use the agreement to manage the risk. Which CRA confirmations are useful for your deal, who needs to request them and how long they take depends on your situation, so it is worth confirming with a lawyer or accountant.

Personal Property Registry searches can be made by business debtor name or by serial number, and are requested on a Search Request form at any registry agent office in Alberta. What a result means for your deal is worth confirming with a lawyer.

What to do next

Raise tax concerns early, ideally before you sign a letter of intent or purchase agreement. A seller who has paid everything should have no trouble providing records.

Frequently asked questions

Is GST charged when I buy a business in Alberta?

It can be. Without an election, each property and service is a separate supply and GST at 5% can apply to the taxable parts. A valid joint election can remove tax on the supplies under the agreement.

Which form is used for the GST election?

The CRA form is GST44, 'GST/HST Election Concerning the Acquisition of a Business or Part of a Business'. If the buyer is a registrant, it must file the election with the Minister.

Can I use the election if I am not GST registered?

Not if the seller is a registrant and you are not. Speak to an accountant before the deal is set up.

Can a seller's CRA debts become my responsibility?

It depends on the structure of the deal and the type of debt. A lawyer or accountant should confirm before you sign, and the agreement should include tax warranties and protection.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Alberta laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a lawyer who practises in Alberta. Reach us at 1-844-900-1070 or send our Team a message.

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