TD Bank IRD Calculator: what will it cost to break your TD mortgage?

TD Canada Trust runs the most aggressive IRD formula of the Big Six. If you signed a closed fixed TD mortgage and you're trying to break it mid-term, the penalty quote that lands in your inbox almost always shocks people — five-figure penalties on six-figure balances are routine. The reason is mechanical, not malicious: TD's commitment language entitles them to use posted rates rather than discounted rates as the comparison benchmark, and that single design choice can multiply a $4,000 penalty into a $24,000 one.

The exact TD formula

TD's IRD formula uses what they call your "Net Rate" — TD's posted rate at the time you signed, minus the rate discount you negotiated. They then compare that Net Rate against TD's current posted rate for a term closest in length to the time you have remaining (rounded down, usually). The spread between your Net Rate and the comparison posted rate is multiplied by your outstanding balance and your months remaining ÷ 12. Crucially, TD does NOT use your contract rate as the comparison — they use the original posted rate, then subtract the discount. When posted rates have moved less than contract rates (which is almost always the case when monolines have dropped their pricing aggressively), the artificial spread balloons.

Where to find your Net Rate

You'll find your Net Rate on your TD Mortgage Loan Agreement (signed at closing) and on the annual Mortgage Statement TD mails out every January. Open the TD Mortgage Loan Agreement you signed at funding. On page 2 or 3 you'll see a block labeled "Annual Interest Rate" — that's your contract rate. Right below or beside it, look for "Posted Rate" and "Rate Discount" or "Net Rate". If you only have the welcome letter, TD's annual mortgage statement (mailed every January) also lists the posted rate at signing. If you can't find it at all, call TD at 1-866-222-3456 and ask them to email "the original posted rate and discount from my commitment" — they will, but it can take 3–5 business days.

Worked example: $400K balance, 36 months left

Take a real file we worked: $400,000 outstanding balance, contract rate 4.79%, 36 months remaining in a 5-year fixed. The 3-months' interest method gives $4,790. The monoline IRD would be roughly $8,400 (contract rate vs comparable 3-year discounted rate). TD's posted-rate IRD on that exact same file came back at $24,180 — about 5x the monoline number. That's $19,790 of pure delta caused by the posted-rate methodology, not by any difference in actual mortgage economics.

What to do about it

Three real levers. First, port the mortgage if you're moving — TD allows porting within 120 days and you avoid the penalty entirely. Second, ask TD for a blend-and-extend quote in writing; sometimes the blend is cheaper than the break, sometimes it's a wash, but you need to see both. Third, if you're within 9 months of renewal, sit tight — the IRD shrinks as your remaining term shrinks, and you can switch to a monoline at renewal with zero penalty. Refinancing through a broker to a non-TD lender is the right move only if the lifetime interest savings on the new term exceed the TD penalty plus legal/appraisal costs (roughly $1,500 total).

Why having a broker on the file matters

We pull your actual TD penalty quote in writing — not an estimate — and run it line-by-line against what 50+ other lenders would charge to take you over. We've negotiated TD penalty reductions of $3,000–$8,000 on files where TD's first quote was clearly using stale posted-rate data. And if breaking doesn't pencil, we'll tell you straight up to renew at TD instead of forcing a refinance that loses money.