Mortgage Myths That Can Cost You a Home

A property viewing can feel exciting right up until someone says, “You’ll never get a loan unless you have a 20% deposit.” That single comment has stopped plenty of capable buyers from taking the next step. Mortgage myths are often repeated with confidence, but lending decisions are rarely as simple as a rule of thumb from a friend, family member or social media post.

For first-home buyers, investors, refinancers and self-employed borrowers, the real question is not whether you fit a stereotype. It is whether your income, deposit, expenses, debts and future plans can support the lending you need. Every lender has its own criteria, and the right structure matters just as much as the loan amount.

Why mortgage myths can be expensive

A myth can lead you to wait longer than necessary, approach only one bank, choose the wrong loan features or make a property offer without the right conditions. It can also create needless stress. You may have more options than you think, or you may need to make a few practical changes before applying - both are useful things to know early.

Good mortgage advice is not about telling you what you want to hear. It is about giving you a clear view of where you stand, what lenders are likely to look for and which steps could improve your position. Here are some of the most common myths we hear.

Myth 1: You always need a 20% deposit

A 20% deposit can give you more lending options and may help you avoid low-equity pricing. But it is not the only path into a home. Some buyers may be able to borrow with a smaller deposit, depending on the property, their income, living costs, credit profile and the lender’s current policy.

For eligible first-home buyers in New Zealand, schemes such as Kāinga Ora support may also be relevant. New-build purchases can sometimes be assessed differently from existing homes, particularly where lender low-deposit restrictions and policy settings apply.

The trade-off is important. A smaller deposit may mean a higher interest rate, stricter servicing checks or fewer lenders to choose from. It does not automatically mean “no”, but it does mean the loan needs to be planned carefully. Rather than guessing how much you need, have your position assessed before deciding you are years away from buying.

Myth 2: Your own bank is always the best place to borrow

Your bank knows your transaction history, which can be helpful. However, it is still one lender with one set of policies, rates, turnaround times and views on your income. A bank that suits a salaried employee with a straightforward deposit may not be the best fit for a contractor, business owner or buyer using overseas income.

Lenders do not assess every application in the same way. One may take a conservative approach to bonus income, rental income or recent self-employment, while another may be more comfortable with a well-documented explanation. The aim is not to chase every lender. It is to compare suitable options and present your application properly.

An independent adviser works for you, not a single bank. At Mortgage Time, that means looking at the lending structure and lender fit around your goals, rather than assuming your everyday bank is automatically the answer.

Myth 3: Pre-approval means your finance is guaranteed

Pre-approval is a valuable step, especially when you are ready to make offers. It gives you a clearer budget and shows sellers that you have done the groundwork. But it is not a blank cheque.

Most pre-approvals come with conditions. The lender may still need to approve the specific property, review a registered valuation, confirm your deposit, check that your circumstances have not changed and see acceptable insurance. A property with weather-tightness concerns, unconsented work, leasehold title issues or an unsuitable valuation can affect the final outcome.

Your financial position matters too. Taking on a car loan, using buy-now-pay-later facilities heavily, changing jobs or making large unexplained transactions can change how a lender views your application. Once pre-approved, keep your finances steady and speak with your adviser before making any big money decisions.

Myth 4: Self-employed borrowers cannot get a good home loan

Self-employed people often hear that banks only want standard payslips. The reality is more nuanced. Business owners, contractors and freelancers can secure home loans, but lenders need a reliable picture of income and business stability.

That usually means clean, up-to-date financial records. Financial statements, tax returns, bank statements, GST information and an explanation of any unusual movements can all matter. If your taxable income is lower because you legitimately claim business expenses, that may affect the income a lender can use for servicing. It does not make lending impossible, but it can affect the amount and structure of lending available.

Timing can make a real difference. Applying after a stronger trading period, reducing personal debt or ensuring accounts are current may strengthen an application. A broker who understands self-employed lending can help identify what needs attention before you put time into property searches.

Myth 5: The lowest advertised rate is always the cheapest loan

Interest rates matter, particularly over a large loan balance. But the headline rate is only one part of the decision. A lower rate with inflexible repayment terms may not suit someone planning to make lump-sum repayments, sell within a year or build an investment portfolio.

Consider the full picture: fixed-term options, break fees, offset or revolving-credit features, cash contributions, fees, repayment flexibility and how the loan will work as your circumstances change. A cash contribution can be useful, for example, but it may come with a clawback period if you refinance or sell too soon.

There is no universally perfect loan structure. Some borrowers value repayment certainty and fix most of their loan. Others want part of their lending floating so they can make extra repayments. The right approach depends on your cash flow, risk comfort and plans for the next few years.

Myth 6: You must clear every debt before applying

Reducing debt can improve borrowing power, but clearing every account is not always the first or best move. Lenders look at your total commitments and your ability to service the proposed loan under their assessment rates. Credit card limits, personal loans, vehicle finance and buy-now-pay-later accounts can all have an impact, even when the balances are low.

Sometimes reducing a credit limit helps more than paying off a small balance while leaving the limit open. In other cases, keeping cash available for your deposit, legal costs, moving expenses and an emergency buffer is sensible. The best decision depends on the numbers, not a blanket rule.

Replacing assumptions with a clear plan

The most useful first step is to understand your borrowing position before you fall in love with a property. Gather the basics: proof of income, recent bank statements, details of debts, evidence of your deposit and an estimate of your regular household spending. If you are self-employed, allow time to prepare current business information as well.

From there, you can test realistic price ranges and discuss a deposit strategy, loan structure and likely lender options. This is also the time to be honest about changes ahead. A planned parental leave period, new business venture, job move or intended investment purchase may not stop you borrowing, but it should shape the advice you receive.

Buying a home is not about passing a mystery test. It is about presenting a credible plan that makes sense for you and the lender. The sooner you replace mortgage myths with personalised information, the sooner you can make decisions with confidence.

A straightforward conversation now can save months of second-guessing later. Whether you are ready to buy, refinance or simply want to know what is possible, clarity is a far better starting point than hearsay.

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