BOSTON RATE & HOLDING-PERIOD DESK
Compare three months of interest with a transparent simple IRD estimate.
34 tools. One connected workspace.
Mortgage exit
Compare a three-month simple-interest charge with an explicitly approximate interest rate differential.
YOUR DECISION, IN NUMBERS
METHOD 2026-10-23.3CAD inputs and outputs. Lender posted/discounted rates, compounding, present-value and privilege rules differ; this simple IRD is not a payout quote. Obtain both IRD rates from the lender. No automatic statutory exception is determined. Administration and new-loan costs are separate; accrued interest is excluded.
Get help with my next step ↗Modeled prepayment charge
One assumption changes; everything else stays the same. This is a stress scenario, not a forecast.
No. Lenders use different rate and discount methods. This simple model makes the assumptions visible so you can ask better questions about an actual payout quote.
Ask about your next step ↗THE LONG VIEW
YOUR COMPARISON TABLE
Save up to eight scenarios on this device. Each retains its own tool and assumptions; outputs from different methods are labeled separately. Download a plan before moving to another browser or independent portal.
No scenarios saved on this device yet.
OPEN METHODS / BETTER QUESTIONS
Three-month interest = chargeable principal × contract annual rate ÷ 4. Simple IRD = chargeable principal × positive difference between entered IRD rates × remaining months ÷ 12. The selected closed-fixed scenario takes the greater; open or zero remaining term takes zero.
CAD inputs and outputs. Lender posted/discounted rates, compounding, present-value and privilege rules differ; this simple IRD is not a payout quote. Obtain both IRD rates from the lender. No automatic statutory exception is determined. Administration and new-loan costs are separate; accrued interest is excluded.
Use actual property documents, matching lender estimates and qualified advice where needed. No calculator, API or MCP tool here issues an approval or guarantees a rate.
YOUR NEXT STEP / MITEY U.S.
Ask MITEY about the calculation, an assumption or how to organize your next decision. Choose whether to include your scenario.
This is an educational enquiry. It is not a request for a lender quote, approval or regulated mortgage advice.