Many Kiwi investors feel stuck. On paper there is plenty of equity, but the bank says no to the next investment loan. The rules around serviceability, debt-to-income (DTI) ratios and deposits have tightened, so what used to pass without drama now gets pushed back.
This does not always mean you need a new lender. Often, the real opportunity is in how your current lending is set up. With some smart tweaks to structure, income and debt, you can sometimes unlock the capacity for that next property while staying with your main bank.
Winter is a natural planning season. The market tends to wake up in spring, so this is a good time to sort your lending, get prepped, and be ready to move when the right listing pops up. As an independent New Zealand mortgage broking firm, we work with banks and non-bank lenders across the country to help make that happen without a messy full refinance every time you want to grow.
How Lenders Really Assess Investment Loan Serviceability
When lenders look at an investment loan, they are not working off your real-life bank balance. They run your numbers through their own test calculators. Those calculators are usually more conservative than what you feel day-to-day.
Key parts of serviceability checks often include:
- A higher test interest rate than your actual rate
- Only counting a portion of your rental income
- Applying standard minimum expenses, even if you live lean
- Including every credit card limit and personal debt, even if unused
Investment loans can be harder to pass than home loans because banks see them as higher risk. That can mean higher test rates and tougher shading on rental income. They may also assume your properties sit empty for parts of the year, so they err on the side of caution.
Common blockers we see for investors include:
- Consumer debt like credit cards, car loans and store cards
- Short fixed terms about to roll to higher rates
- Rising costs like rates, insurance and body corporate fees
- New DTI limits from the Reserve Bank that cap how much total debt you can carry against your income
If one or more of these is out of line, a calculator can shut the door, even when you feel comfortably in control.
Practical Ways to Lift Serviceability Without Changing Lenders
Serviceability is just a mix of income and expenses on paper. If we can shift either side, the result can change. The good news is, much of this can be done with your existing bank.
On the expense side, restructuring can help:
- Extending loan terms to reduce monthly repayments on some loans
- Moving suitable lending to interest only to free up cash flow
- Trimming or closing unused revolving credit limits that weigh down your capacity
Those steps do not suit everyone, and they can affect how fast you pay down your home, so they need careful planning. But used well, they can create the space needed for an extra investment loan.
On the income side, lenders may accept more than just base salary. Depending on their rules, you might be able to count:
- Consistent boarder or flatmate income
- Short-term rental income such as Airbnb, with the right track record
- Secondary employment or regular overtime
- Normalised self-employed income when backed by proper financials
Cleaning up the liability side is just as important. Even small debts can punch above their weight in a calculator. It can help to:
- Consolidate high-interest personal debts into your home loan
- Close old credit cards you no longer use
- Reduce card limits that are larger than you actually need
- Clear buy-now-pay-later accounts that still show as active
These may feel like small moves, but together they can shift your serviceability into approval range.
Boosting Your DTI and Deposit Position for Investment Loans
Improving Your DTI
DTI is simply the ratio of your total debt compared to your gross income. Lenders look at DTI to make sure you are not stacked too high, even if month-to-month cash flow seems fine.
You do not always need a big pay rise to improve your DTI. Some practical actions include:
- Paying off small but expensive debts that push up your total
- Shifting some lending to a lower rate product where possible
- Using surplus cash flow to target principal on one key loan, rather than spreading it thin
Strengthening Your Deposit Position
On the deposit side, many investors bump into higher deposit rules for investment loans. Without changing lenders, there can still be ways to improve this.
Options often include:
- Using available equity in your home or another property
- Revaluing properties if values have grown since you last reviewed lending
- Adjusting cross-collateralised structures so you are using security in a smarter way
- Directing cash savings into the most effective place for deposit or debt reduction
The goal is not just scraping together a deposit once, but setting up your structure so future deposits are easier too.
Smart Use of Non-Bank Options While Staying with Your Bank
Non-bank lenders can sound scary to some investors, but they are simply another tool in the kit. You do not need to abandon your main bank to make use of them.
A blended lending strategy might look like this:
- Keep your home loan and long-term core lending with your bank
- Use a non-bank lender for a specific investment property that is tight on serviceability
- Use short-term non-bank solutions for things like bridging or development finance
Non-banks can help when:
- Income is complex, variable or recently changed
- You are early in your investing journey and need more flexible criteria
- DTI or serviceability rules at your bank block an otherwise strong deal
Importantly, non-bank lending does not have to be forever. With the right plan in place, we can work towards an exit back to mainstream banking once your income, equity or DTI position has improved. That long view is where good advice makes a big difference.
Work with a Broker to Unlock Your Next Investment Purchase
If you want to add to your portfolio, the quiet months are a smart time to get your lending sorted. When listings start to pick up, you want to already know what you can do, rather than racing to fix structure issues at the last minute.
As an independent mortgage broking firm in New Zealand, we focus on helping investors improve what they already have in place. That can include a full lending health check with your current bank, ideas to restructure loans for better cash flow, strategies to strengthen your DTI and deposit position, and smart use of non-bank top ups where they make sense.
With the right plan, you may not need a new main lender at all. Small, smart changes to how your lending is set up can be enough to turn your existing equity into the next investment loan and move you one step closer to your long-term property goals.
Turn Your Investment Plans Into Action Today
If you are ready to move from ideas to outcomes, we can help structure the right finance solution for your goals through our investment loans. At Capital Finance, we take the time to understand your project and tailor options that fit your budget, time frame and risk profile. Talk with our team today to explore your next steps or to get a clear comparison on the numbers, or simply contact us to book a time that suits you.
FAQ
What is DTI and how does it affect investment loan serviceability?
DTI (debt-to-income) is the ratio of your total debt compared to your gross income. Reserve Bank DTI limits cap how much total debt you can carry against your income, so even if your cash flow feels comfortable, a high DTI can block approval for a new investment loan.
Can I improve my serviceability without switching lenders?
Often, yes. Many investors can lift serviceability by restructuring existing lending, such as extending loan terms, moving suitable loans to interest only, closing unused credit limits, or getting more of their income counted, all while staying with their current bank.
Are non-bank lenders a good option for investment loans?
Non-bank lenders can be a useful tool when income is complex, you are early in your investing journey, or DTI and serviceability rules block an otherwise strong deal with your main bank. This does not have to be a permanent move; many investors transition back to mainstream banking once their position improves.
