Mortgage Switching and Comparison: When to Move Lenders

Mortgage switching (moving your loan to a different lender) can save thousands in interest, but it carries costs and risks. Deciding when to switch requires comparing interest rate savings against switching costs.

Switching costs include: discharge fee ($100–$350), new valuation ($300–$600), legal fees ($500–$1,500), application fees ($200–$400), and potentially break costs if switching from a fixed rate mid-term. Total switching costs typically run $1,500–$3,500.

The break-even calculation: if a new lender offers a 0.5% lower rate and you have a $500,000 mortgage, you save roughly $2,500/year in interest. With switching costs of $2,500, you break even in year one and start saving from year two onward.

If switching costs are $2,500 and you save $2,000/year, you break even after 1.25 years. If you’re staying in the home for 5 years, the total benefit is $2,000 × 5 – $2,500 = $7,500 in net savings. Worth it.

Variable rate switching is low-cost and low-risk. If you’re on a variable rate and another lender offers 0.5% lower, switching typically costs $1,500–$2,500 (no break costs because variable rates don’t have exit penalties). The decision is straightforward: if you’re saving 0.5% and staying for 3+ years, switch.

Fixed rate switching has break cost risks. If you’re locked into a 4.8% fixed rate with 2 years remaining and another lender offers 5.2%, you’re not saving money (new rate is higher). However, if another lender offers 4.2% fixed, the 0.6% saving is worth $3,000/year. But the break cost on your current loan might be $8,000–$12,000 (depending on how rates have moved), making the switch uneconomical.

Fixed rate break costs are calculated using Interest Rate Differential (IRD). The calculation is: remaining loan balance × rate difference × years remaining. A $500,000 loan at 4.8% with 2 years remaining, switching to 4.2%, has a 0.6% rate difference. Break cost = $500,000 × 0.6% × 2 = $6,000. If the new lender’s rate saving is $3,000/year, you break even after 2 years.

Rate chasing (constantly switching for small rate improvements) is uneconomical. Switching every 12 months for a 0.1% rate improvement costs you more in fees than you save in interest. Patience and switching less frequently is better.

New customer discounts are often temporary. A lender offers a “new customer rate” of 5.8% for the first 2 years, then the rate resets to their standard rate (6.4%). If you switch and the discounted rate expires before you plan to switch again, you’ll suddenly be paying above-market rates, negating the initial saving.

Lender reputation and customer service matter. Switching to save $1,500/year isn’t worth it if the new lender has poor service, frequent rate disputes, or lengthy call queues. Some borrowers stay with a slightly higher-rate lender for peace of mind and good service.

Technology and automation have reduced switching friction. Some lenders now offer instant switching (no discharge needed, just transfer your loan), reducing costs and timelines. If your current lender and new lender both support instant switching, the cost drops to $500–$1,000.

Switching brokers can facilitate the move. A broker can canvas multiple lenders, negotiate rates, and coordinate the switching process. Some brokers charge a fee ($400–$800); others are commission-paid by the lender and free to you. Using a broker is worthwhile if you’re unsure about the switching process.

Disclaimer: This article provides general information only and should not be taken as financial or legal advice. Break costs, discharge fees, and switching timelines vary by lender and loan type. Use a mortgage calculator or broker to estimate your break-even point before switching.