How Much Can Medical Professionals Borrow? A Guide to Serviceability

Ask five different doctors what they could borrow for a home loan and you’ll likely get five very different answers — not because their incomes are wildly different, but because how that income is structured changes what a lender sees.

What “serviceability” actually means

Serviceability is a lender’s assessment of whether you can comfortably afford loan repayments, based on your income, your living expenses, and any existing debts. It’s not the same as your borrowing power headline figure — it’s the underlying calculation that produces that figure.

For most employed borrowers with a standard PAYG salary, this is relatively simple: the lender looks at your payslips, applies a standard set of assumptions about living expenses, and calculates what’s left over to service a loan.

For medical professionals, it’s rarely that simple.

Why medical professional income looks different to a lender

A specialist with a mix of hospital employment and private billing, a GP working as a contractor across multiple practices, a dentist who owns their own practice, or a locum working short-term contracts across several states — all of these income structures require a lender to look past a single payslip and understand the full picture.

Some of the common complexities include:

• Variable or seasonal income — locums and contractors often have income that varies month to month
• Multiple income streams — a specialist with both salaried hospital work and private practice income
• Business income — practice owners need their business financials assessed, not just personal income
• Recent career changes — a new graduate, or someone recently gone from employee to practice owner, may have limited history in their current structure

Different lenders treat each of these differently. Some will average income over one or two years, some want to see a consistent trend, and some have specific policies recognising the relative income stability of medical professions even where the income itself looks variable on paper.

What lenders typically want to see

While policies vary, most lenders will generally look for:

• Recent tax returns or Notices of Assessment (usually the last one or two years)
• Recent payslips if you have any employed income
• Business financials (profit and loss, balance sheet) if you’re a practice owner
• Evidence of any locum or contract income, such as remittance advices or contracts

The more consistent and well-documented your income history, the more straightforward the assessment tends to be. Where it gets more complex — new practice ownership, a recent change in work structure, or a mix of several income types — is exactly where a broker experienced with medical professional lending tends to add the most value, because they know which lenders are set up to assess income the way it actually looks for you.

A rough way to think about it

At a basic level, serviceability comes down to:

Net income − living expenses − existing debt repayments = capacity to service a new loan

Lenders then apply their own buffers and assumptions on top of this (often assessing your ability to repay at a higher interest rate than what you’d actually pay, as a safety margin). Our borrowing power calculator walks through a simplified version of this if you want a rough, illustrative starting point — though it’s not a substitute for an actual assessment.

The bottom line

If your income doesn’t fit neatly into a standard employed-PAYG box, that doesn’t mean your borrowing options are limited — it means the assessment needs a bit more care, and the choice of lender matters more. A broker who regularly works with medical professionals will generally have a clearer sense of which lenders on their panel are comfortable with your specific income structure, and can help present your application in a way that reflects your actual financial position.