Refinancing is worth it when the interest you save each month clearly outweighs the cost of switching, and you’ll keep the loan long enough to break even. In practice that usually means you’re out of your lock-in period, your outstanding balance is still sizeable, and a cheaper package is available. If any of those is missing, refinancing often costs more than it saves.
🔁 What refinancing (and repricing) actually means
Refinancing means replacing your current home loan with a cheaper package, either at a new bank or your existing one. Repricing is the in-house version: you stay with the same bank and just move to one of their newer packages. The goal is the same in both cases, which is to lower the interest portion of your monthly repayment so more of each instalment goes towards the actual loan.
You can refinance to a fixed rate, where your interest is locked for a few years and your repayment is predictable, or a SORA-pegged floating rate, which moves with market benchmarks. Floating can be cheaper when rates fall but rises when they climb, so the “right” choice depends on how much certainty you want. To see how a different rate reshapes your repayment schedule, you can model it on the mortgage calculator before committing.
⚠️ The watch-outs that eat your savings
A lower rate looks great on paper, but a few costs sit between you and the savings. Before you switch, check these:
- Lock-in period: if you exit your current package early, the early-exit penalty (set by your bank) is typically around 1.5% of your outstanding loan. On a large balance, that alone can wipe out a year of savings.
- Legal and valuation fees: refinancing involves a new legal conveyance and a property valuation. Banks sometimes subsidise these, so always ask what’s covered and what stays in your pocket.
- Fixed versus SORA-pegged: a headline floating rate may be lower today but can rise later. Compare like for like, not just the teaser number.
- Your borrowing limits: good news for most owners — when you refinance the loan on your own home (owner-occupied), the 55% Total Debt Servicing Ratio generally does not apply. It does kick in when you refinance an investment property loan, where you can check your room on the TDSR calculator.
🧮 The break-even calculation
The whole decision comes down to one comparison: your monthly saving versus your total switching cost. Add up the penalty (if any), legal fees and valuation fees, then divide that by your monthly saving. The result is how many months it takes to break even. If you’ll keep the loan well past that point, refinancing is worth it. If not, you’re paying to switch for nothing.
Because every package, balance and fee mix is different, the cleanest way to run this is the refinance calculator, which compares your current loan against a new one and shows the break-even directly.
💡 A worked example
Say you have a large outstanding loan and your current rate works out to roughly $400 more in monthly interest than a new package would charge. That’s a $400 monthly saving, or about $4,800 a year.
Now the costs. Suppose you’re out of your lock-in, so there’s no early-exit penalty, but you still face legal and valuation fees that the new bank only partly subsidises, leaving you about $2,400 out of pocket. Dividing $2,400 by $400 a month gives a break-even of six months. If you plan to keep the property and loan for years, paying $2,400 once to save $4,800 every year is clearly worth it.
Flip one detail and the maths changes. If you were still in your lock-in, a 1.5% penalty on a large balance could add several thousand dollars to the switching cost, pushing your break-even far out and possibly turning the whole move into a loss.
🚫 When it is NOT worth it
Refinancing isn’t always the smart move. Hold off when:
- You’re still in your lock-in period. The early-exit penalty usually swamps any saving until the lock-in ends.
- Your balance is small. A lower rate on a tiny outstanding loan saves only a few dollars a month, which rarely covers the fees.
- You’re about to sell. If you won’t hold the loan past the break-even point, the switching costs never pay off.
- The rate gap is thin. If the new package is only marginally cheaper, the savings may not justify the paperwork and fees.
📊 Run your own numbers
Refinancing rewards people who do the arithmetic. Plug your outstanding balance, current rate, the new rate and any fees into the refinance calculator to see your real monthly saving and break-even, then sanity-check your repayment on the mortgage calculator. A few minutes there tells you whether switching genuinely puts money back in your pocket, or just moves it to someone else’s.