Private Mortgage Penalty Calculator

Model the exact capital burn required to extricate yourself from an unregulated private mortgage.

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The Unregulated Trap

Here is the problem: A-tier banks are legally capped at charging you roughly a 3-month interest penalty for breaking a variable mortgage. Private, unregistered lenders face zero such caps.

If you break a 1-year private mortgage after only 4 months, the contract almost universally demands the full "yield maintenance"—which means you owe them the total interest for the remaining 8 months, upfront, in cash.

The Yield Maintenance Formula (Private Lender)

Unlike standard mortgages, private lenders often demand 100% of the future interest they would have earned, plus exorbitant discharge and legal fees.

BalanceCurrent outstanding principal
RateYour high annual interest rate (e.g., 12%)
Months\;RemainingHow many months are left on the contract term

Manual Example: The 8-Month Trap

You have a $300,000 private mortgage at 12% interest on a 1-year term. You want to break it 4 months in (8 months remaining). Discharge/legal fees are $1,500.

1
1. Monthly Interest
You pay $3k per month in pure interest.
\$300,000 \times \left(\frac{0.12}{12}\right) = \$3,000
2
2. Yield Maintenance
The lender demands all interest for the remaining 8 months.
\$3,000 \times 8 = \$24,000
3
3. Add Fees
Add the administrative and legal discharge fees.
\$24,000 + \$1,500 = \$25,500
4
Result
This is the cash required just to exit the contract.
\$25,500 \text{ Total Penalty}

Frequently Asked Questions

Why are private mortgage penalties so high?
Unlike A-tier banks that are legally capped at roughly a 3-month interest penalty for breaking certain mortgages, unregulated private lenders can demand "yield maintenance." This means they force you to pay all the interest they would have earned if you kept the loan for the full term.
Can I negotiate a private mortgage penalty?
Usually, no. The terms are strictly laid out in the contract you signed. However, if you are refinancing with another lender, that new lender may allow you to roll the penalty cost into the new, lower-interest mortgage.
What are the hidden fees?
Aside from the interest penalty, breaking a private mortgage often triggers discharge fees, administrative fees, and legal fees paid to the lender's lawyer (which you must cover). These easily add thousands to the total cost.

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