Non-Bank Lender Cost Calculator NZ
Second-tier lending gets discussed as though the rate were the whole story, and it is not even the main part of it. A three point gap sounds enormous and, over two years on an ordinary loan, costs less than most people assume. What actually determines whether the arrangement is sensible is how long you are in it, and whether there is a real plan to leave. A non-bank loan taken deliberately as a bridge, with a clear view of what has to change before a bank will take you and roughly when, is a priced decision. The same loan taken because nothing else was available, with no exit and no date, is not a bridge at all, and its cost should be judged over the whole term rather than over an escape that was never scheduled. This page shows both numbers, because the difference between them is the decision.
Side by side over the bridge
| Non-bank | A bank, if you could | Difference | |
|---|---|---|---|
| Monthly repayment | $4,204.27 | $3,160.34 | $1,043.93 |
| Paid in over the period | $100,902.50 | $75,848.16 | $25,054.34<5,054.34 |
| Balance still owing at the end | $493,527.58 | $488,448.46 | $5,079.12 |
| Fees at the start | $2,500.00<,500.00 | $500.00 | $2,000.00<,000.00 |
| Fees to get out | $2,700.00<,700.00 | $0.00 | $2,700.00<,700.00 |
| True cost of the non-bank route | $34,833.46 |
Comparing repayments alone would be misleading, because the two loans pay down principal at different speeds. Adding what you still owe at the end to what you have paid makes them directly comparable.
Where the cost comes from
How the cost grows with time
| If you stay | True cost | Per month |
|---|---|---|
| 12 months | $19,732.59 | $1,644.38 |
| 24 months | $34,833.46 | $1,451.39 |
| 36 months | $49,997.31 | $1,388.81 |
| 60 months | $80,485.86 | $1,341.43 |
| The full term | $377,815.13 | $1,049.49 |
The cost per month falls the longer you stay, because the fixed fees at both ends spread over more months. The total keeps climbing.
The exit is the whole decision
Everything about whether second-tier lending makes sense turns on the exit, and the rate barely matters by comparison. A two year bridge at three points above bank rates is a defined cost that buys a property you would not otherwise own, and for many self-employed borrowers or people with an ageing credit issue that is a reasonable trade. The same loan with no exit is a different product entirely. The useful test is whether you can say what has to change before a bank will take you and roughly when. If the answer is vague, price the arrangement over the full term rather than the bridge, because that is what you are actually signing up for.
Repayments alone understate the difference
Comparing what you pay each month is the obvious approach and it is wrong, because two loans at different rates reduce the principal at different speeds. Over the same period the cheaper loan has not only cost less in interest, it has also left you owing less, and both parts belong in the comparison. Adding the balance remaining to the amount paid makes the two directly comparable, and the gap that produces is the honest figure.
Fees at both ends matter more on a short bridge
Establishment, broker and early repayment fees are fixed amounts, so their weight depends entirely on how long you spread them over. On a two year bridge they are a substantial share of the total cost, and on a ten year stay they barely register. That has a counterintuitive consequence: the shorter the bridge, the more the fees matter and the less the rate does. If you expect to refinance within a year, negotiating the establishment fee is worth more than negotiating the rate.
Worked example
A borrower takes $500,000.00 over 30 years at 9.50% from a non-bank lender because no bank will lend to them yet. A bank would have charged 6.50%. They expect to refinance in 24 months.
Setting up costs $2,500.00 against a bank's $500.00, leaving is expected to cost an early repayment fee of $1,500.00, and refinancing to a bank will cost a further $1,200.00.
Over those 24 months they pay $100,902.50 against a bank borrower's $75,848.16, and still owe $493,527.58 against $488,448.46, so the slower paydown adds to the gap rather than offsetting it. With the fees at both ends the true cost of the bridge is $34,833.46, or $1,451.39 for every month they are there. The repayment is $1,043.93 a month higher, which is the figure that has to be affordable.
The number worth reading twice is the last one. If the refinance never happens and the loan runs its full 30 years, the arrangement costs $377,815.13 more than a bank loan would have.
How this is calculated
Both loans are treated as ordinary table mortgages over the same term at a constant rate, and the monthly repayment for each is calculated with the standard amortising formula. Over the period before the expected refinance, the amount paid in is the repayment multiplied by the number of months, and the balance remaining is calculated by amortising forward to that point. Adding the balance remaining to the amount paid gives a figure that is directly comparable between the two, since it accounts for the different speeds at which principal is repaid. The true cost is the difference between those two comparable figures, plus the difference in setup fees, plus the early repayment fee and the cost of refinancing, both of which fall only on the non-bank route. The full term figure repeats the same calculation over the whole term with no exit, so the early repayment and refinancing costs drop away.
Official sources
- Getting financial advice, Financial Markets Authority
- Lending and credit, Commerce Commission
- Oversight of non-bank deposit takers, Reserve Bank of New Zealand
- Borrowing, Sorted
Related NZ calculators
- Mortgage Refinance Calculator for the refinance itself
- Borrowing Capacity Calculator for what a bank would lend
- Low-Equity Premium Calculator for the other cost of a small deposit
- Mortgage Interest Rate Comparison Calculator for comparing rates generally
- Deposit Gap Calculator if the deposit is the reason a bank has declined