With mortgage rates showing signs of decline in 2025 and the Official Cash Rate (OCR) continuing to drop, many New Zealand homeowners are considering whether now is the right time to refinance their mortgage. The current mortgage landscape presents both opportunities and challenges for Kiwi homeowners looking to optimise their home loan arrangements.

Current New Zealand Mortgage Market Overview

As of June 2025, the average floating rate is 6.35%, and the average 1 year fixed rate is 5.03%, marking a significant shift from the peak rates experienced in recent years. The Reserve Bank of New Zealand started 2025 by lowering the Official Cash Rate (OCR) to 3.75% in February, a 50 basis points cut, with further reductions expected throughout the year.

Unless there’s big shock to the economy, longer-term fixed mortgage rates have already bottomed out. And only shorter-term rates – six-month and one-year fixed – are likely to dip lower, into the 4.5%-5.0% range over the second half of the year.

What is Mortgage Refinancing?

Refinancing (also called remortgaging) is when you replace your mortgage with another in order to get better terms or borrow more. This process involves switching from your current lender to a new one, or negotiating new terms with your existing lender to secure better rates, features, or loan structures.

The Pros and Cons of Refinancing in 2025

Advantages of Refinancing

• Lower Interest Rates: Access to reduced rates as the OCR continues to fall
• Reduced Monthly Payments: Lower rates can significantly reduce your monthly mortgage payments
• Switch to Better Terms: Opportunity to access better loan features, offset accounts, or redraw facilities
• Consolidate Debt: Combine higher-interest debts into your mortgage at a lower rate
• Access Equity: Unlock home equity for renovations, investments, or other purposes
• Competitive Market: Banks are actively competing for customers with attractive switching incentives
• Flexible Repayment Options: Access to features like payment holidays or flexible payment structures

Potential Disadvantages

• Break Fees: Early termination costs if you’re locked into a fixed-rate term
• Application Costs: Legal fees, valuation costs, and bank establishment fees
• Time and Paperwork: Refinancing requires significant documentation and processing time
• Rate Uncertainty: Shorter-term rates may continue falling, potentially making current fixed rates less attractive
• Stricter Lending Criteria: Banks may have tightened lending standards since your original loan
• Opportunity Cost: Time spent refinancing could be used for other financial planning activities

Key Benefits of Home Loan Refinancing

1. Significant Interest Savings

With current rates trending downward, refinancing can offer substantial savings over the life of your loan. Even a 0.5% reduction in interest rate can save thousands of dollars annually on a typical New Zealand mortgage.

2. Improved Cash Flow

Lower monthly payments free up cash for other investments, emergency funds, or lifestyle improvements. This improved cash flow can provide greater financial flexibility during uncertain economic times.

3. Access to Modern Banking Features

Newer mortgage products often include features like:

• Offset accounts that reduce interest charges
• Redraw facilities for accessing extra payments
• Split loan options combining fixed and variable rates
• Online banking tools and mobile app functionality

When Should You Consider Refinancing?

Refinancing makes sense when:

• Your current rate is more than 0.5% above market rates
• You can save more in interest than the costs of switching
• Your financial situation has improved since your original application
• You need access to additional features or flexibility
• Your current fixed-rate term is ending

The Refinancing Process in New Zealand

Step 1: Assess Your Current Situation

Review your existing mortgage terms, remaining balance, and any break fees that may apply. Calculate the total cost of refinancing including legal fees, valuation costs, and establishment fees.

Step 2: Shop Around

Compare offers from multiple lenders including major banks like ANZ, ASB, BNZ, Westpac, and Kiwibank, as well as non-bank lenders. Consider using a mortgage broker to access wholesale rates and expert advice.

Step 3: Prepare Your Application

Gather required documents including recent payslips, bank statements, tax returns, and property valuations. Ensure your credit score is in good shape before applying.

Step 4: Professional Support

Consider working with mortgage advisors who can navigate the application process and negotiate on your behalf. Many banks offer mobile mortgage managers who can visit you at home to discuss options.

Costs Associated with Refinancing

Understanding the costs involved in refinancing is crucial for making an informed decision:

• Break Fees: $0 – $15,000+ depending on remaining term and rate difference
• Legal Fees: $800 – $2,000 for settlement and documentation
• Valuation Costs: $500 – $1,500 depending on property type and location
• Bank Establishment Fees: $0 – $1,000 (often waived as switching incentives)
• Mortgage Broker Fees: Usually paid by the lender, not the borrower

Regional Considerations for New Zealand Homeowners

Property values and lending criteria can vary significantly across New Zealand regions. Auckland and Wellington homeowners may have more equity to leverage, while regional property owners might find more competitive rates due to lower risk assessments.

Looking Ahead: Market Predictions for Late 2025

Economic forecasters suggest that mortgage rates may continue to decline through 2025, particularly for shorter-term fixed rates. However, it’s important to remember that the ultra-low rates that some lucky homeowners managed to lock in during the pandemic were outliers, and that the historical, average one- and two-year mortgage rates of between 5% and 6% represent more typical market conditions.

Conclusion

Refinancing your mortgage in 2025 presents compelling opportunities for many New Zealand homeowners, particularly with the OCR trending downward and competitive pressure among lenders. However, the decision requires careful consideration of your individual circumstances, current loan terms, and refinancing costs.

The key to successful refinancing lies in thorough research, professional advice, and timing. With shorter-term rates expected to continue falling, homeowners have the opportunity to access immediate savings while positioning themselves for further rate reductions later in the year.

Whether refinancing makes sense for you depends on your current rate, remaining loan term, financial goals, and risk tolerance. By carefully weighing the pros and cons outlined in this guide, you can make an informed decision that supports your long-term financial wellbeing.