Learn
How we calculate
SeeMoney models mortgage scenarios forward from today. These guides explain amortisation theory and the specific rules our simulation uses, so you can scrutinise the numbers and understand how they may differ from other calculators or your lender.
Guides
Amortisation basics
How interest, principal, and minimum payments are calculated using periodic compounding and standard amortisation formulas.
Payment schedules
How monthly, fortnightly, and weekly payment timing and period counts work in SeeMoney's projections.
Scenario comparison
How your scenario compares to a minimum-payment baseline to calculate interest saved and time saved.
Future events
How lump sum payments, interest rate changes, and payment updates affect your mortgage scenario.
Accuracy and limitations
Why SeeMoney figures may differ from your lender and what our mortgage model does not include.
Questions about our calculations?
If something looks wrong or you want to report a discrepancy, email support@matchworklabs.com.