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Penalties for Understating Value on an Ontario LTT Affidavit

Thinking of stating a lower price to save land transfer tax? Learn how the affidavit, audits and penalties work in Ontario and the lawful options.

Real Estate5 min readTSLBy the Treadstone Law Team · OntarioUpdated October 28, 2026
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Key takeaways
  • Land transfer tax is normally based on the amount paid for the land, and assumed mortgages and other liabilities count.
  • Failing to file a required return on time may lead to assessment of tax, penalty and interest.
  • Seeking a first-time buyer refund through deceit, falsehood or fraud may lead to charges, with a maximum fine on conviction of $4,000.
  • Exact penalty amounts for an understated affidavit depend on the current law, so confirm them with a lawyer before you decide anything.

When a price is high, some buyers and sellers wonder whether the paperwork could show a lower number. It can be tempting, but the figure on the land transfer tax affidavit is a sworn statement, and it is the basis for the tax.

This article explains what counts as value, what the consequences can be, why common shortcuts do not hold up, and what lawful options exist. We have not set out specific penalty amounts for understating value, because those depend on current legislation that a lawyer should confirm.

What the affidavit is measuring

Land transfer tax is payable by the person who acquires the land, and it is payable when the transfer is registered. It is normally based on the amount paid for the land, plus the amount remaining on any mortgage or debt the buyer assumes. Ontario guidance states that consideration includes the assumption of any liabilities.

For new homes, the tax applies to the true value of the consideration, which is not limited to the price in the agreement. Buyer-selected extras and upgrades, builder-added installations, and costs passed to the buyer, such as lot levies, development charges and school levies, are included.

So the question the affidavit answers is not simply what the contract price was. It is what was really given for the land, in any form.

What the consequences can be

Fewer consequences are clearly spelled out than many people expect, so here is what is clear. Failing to file a required return for an unregistered disposition within 30 days may lead to assessment of tax, penalty and interest. First-time buyer refund applications and payments are subject to audit. Obtaining or attempting to obtain a refund through deceit, falsehood or fraud may lead to charges, with a maximum fine on conviction of $4,000.

Beyond those points, the penalty amounts and audit powers that apply to a false statement of value on the affidavit are set by statute. Check the current legislation with a lawyer rather than relying on a figure you saw online.

In general terms, a sworn document that turns out to be wrong can mean unpaid tax, interest, penalties, and legal costs to deal with the problem. It can also create trouble later, when you sell, refinance or are asked to explain the transaction.

Common shortcuts and why they fail

IdeaWhy it does not work
State a lower price on the documentsTax is normally based on the amount paid for the land plus any assumed debt, so a lower figure on paper does not change what was really given.
Leave an assumed mortgage out of the numbersThe amount remaining on a mortgage or debt the buyer assumes is added to the base.
Treat a family sale as a giftIf no consideration passes in any form, no tax is payable, but an outstanding encumbrance is taxed as consideration regardless of the relationship between the parties, apart from certain spousal transfers.
Move extras outside the new-home contractBuyer-selected extras and upgrades, and builder-added installations, are included in value.
Claim a first-time buyer refund you do not qualify forFirst-time buyer refund applications and payments are subject to audit, and deceit, falsehood or fraud may lead to charges.

The same principle runs through all of these. The documents should match what actually happened.

Lawful options that can lower the bill

Some reductions are legitimate because the rules provide for them.

Each one depends on facts and paperwork. A lawyer can confirm whether it fits before anything is signed or sworn.

What to do next

If you are at the planning stage, the safest step is to settle the true consideration and let the lawyer prepare the affidavit from accurate information. If you already signed something you are worried about, speak to a lawyer promptly. Time limits apply to returns and refund claims, including 30 days for an unregistered disposition return.

Frequently asked questions

Can I put a lower price on the transfer to pay less tax?

No. Tax applies to the true value of the consideration, and for new homes that is not limited to the price in the agreement. Assumed mortgages and other liabilities are included too.

What happens if I do not file a required return on time?

Failing to file a required return for an unregistered disposition within 30 days may lead to assessment of tax, penalty and interest.

What is the penalty for a false first-time buyer refund claim?

Refund applications and payments are subject to audit, and obtaining or attempting to obtain a refund through deceit, falsehood or fraud may lead to charges, with a maximum fine on conviction of $4,000.

Does selling to a family member change the value?

Not by itself. An outstanding encumbrance is taxed as consideration regardless of the relationship between the parties, except for certain spousal transfers. A true gift with no consideration in any form is not taxed.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario 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 licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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