Comparing a 5.18% 20-year fixed mortgage quote in Tokyo

[cairn.common]

A small update to the quote has created the bigger question: once the fee and loan-to-value band were applied, the 5.18% offer no longer looked as competitive, although its overpayment conditions remain noticeably better. This is for financing of a Tokyo purchase around ¥58,140,000 over a 20-year fixed term.

I now need a comparison that reflects an actual decision rather than a single headline measure. Should I model the amount paid by likely move or refinance dates, then add fees and the remaining balance at each point? I also want to verify whether portability would apply to me, test the monthly payment at different loan-to-value levels, and avoid choosing on the assumption that cheaper refinancing will be available later.

 

[lena.voss]

Twenty years is only the right comparison window if you are reasonably likely to retain this loan for that long. Otherwise, choose a few plausible exit dates and calculate the upfront charges, payments made, remaining balance and any early-repayment cost at each date.

APR can help eliminate obviously expensive offers, but it should not decide between two close ones. A slightly dearer loan may be the better fit if its overpayment terms reduce your balance faster or give you useful flexibility. The key is to put a cash value on that flexibility rather than treating it as a free extra.

 

[grand_slate]

The missing fact is how long you expect to own this property. If a move or refinance is plausible after, say, several years, portability and early-repayment terms could outweigh a modest rate difference—but only if portability is actually available in your circumstances.

I’d make side-by-side cash-flow tables for a few holding periods and loan-to-value levels. Also stress-test the monthly payment without assuming refinancing will be cheaper; that assumption leaves you exposed if rates or lending criteria move against you.