The First-Time Buyer's Mortgage Guide: What Lenders Won't Tell You

Your first mortgage is the largest financial commitment of your life — and most buyers go in blind. Here’s what actually moves the needle on approval and on cost.

The deposit is everything

The single biggest factor in your mortgage isn’t your salary — it’s your deposit. A bigger deposit unlocks:

• Better interest rates (often 0.5–1.5 % lower).
• Access to more lenders.
• Lower monthly payments.
• No lender’s mortgage insurance (LMI / PMI) once you cross 20 % equity.

Save 20 % if you possibly can. The savings compound for the life of the loan.

Fixed vs variable: the real tradeoff

• Fixed rate = predictable payment, protection if rates rise, but you miss out if rates fall.
• Variable / tracker = payments move with the central bank rate, often cheaper over time, but riskier.

For most first-time buyers, a 5-year fixed is the sweet spot: long enough to plan around, short enough to refinance if rates drop.

Affordability isn’t what you think

Lenders don’t just look at your salary — they stress-test your ability to keep paying if rates rise by 2–3 %. They scrutinize:

• Existing debt payments.
• Childcare and school fees.
• Discretionary spending patterns.
• Job stability and probation periods.

The three things that get applications rejected

1. Unexplained large deposits. Lenders want to trace every dollar. Move your deposit money into your account at least 3–6 months early.
2. New credit applications in the 6 months before applying. Even a phone contract can dent your score.
3. Pay discrepancies between your application and bank statements.

Negotiate the rate — always

The advertised rate is a starting point, not a final offer. Get a written offer from two lenders and ask each to beat the other. Brokers do this for free (they’re paid by the lender) and consistently beat direct-to-bank pricing.

The right mortgage is the one you can still afford at 2 % higher rates — and that you’ll still be happy with in 10 years.