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Builder and Plumber Home Loans Sydney: How Lenders Assess Trade Income

By the Mortgagefy Team · Published · Last reviewed

Trade income is often variable: work comes in waves, you may be a sole trader or run a company, and tax deductions can make your taxable income look lower than what you really earn. This guide explains how lenders may assess that.

Free, no obligation. Conditions apply. Eligibility, lending criteria, fees and charges apply and vary by lender. General information only, not credit advice.

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Who this guide is for

  • Sole traders and ABN holders in the building and plumbing trades
  • Company directors and partners
  • Subcontractors and labour-hire tradies
  • Employees moving into self-employment
  • Owner-builders (see our construction loans page)

The real challenge

Lenders usually assess self-employed income from tax returns. If deductions reduce your taxable income, your borrowing capacity can look lower than your real earning power. Seasonal work and a new business add to that.

Some lenders accept alternative documents such as BAS statements or an accountant's letter, and some consider add-backs for certain business expenses. Policies vary by lender and by how long you have been trading.

How lenders may assess trade income

Income typeWhat lenders commonly look at (varies)
Sole trader (ABN)Tax returns, notices of assessment and BAS. Time in business matters.
Company directorCompany and personal tax returns and financials. How salary, dividends and retained profit are treated varies.
Subcontractor or labour hirePayment summaries or ABN income and your contract history.
Employee tradiePayslips. Overtime and allowances may be partly included, depending on the lender.
New business (under two years)Some lenders consider a shorter trading history with supporting documents, while others require two years.

General information only. Requirements vary by lender and change over time. Confirm current requirements with your chosen provider.

Documents lenders may ask for

  • Two years of tax returns and notices of assessment, or alternative documents where a lender allows them
  • Recent BAS statements and business bank statements
  • An accountant's letter confirming your income
  • ABN registration details, proof of your deposit and identification
  • A list of your debts and credit card limits

Ways to make your application clearer

  • Keep your BAS and tax returns lodged on time
  • Keep business and personal accounts separate
  • Ask your accountant which business expenses a lender may add back
  • Avoid new debt and reduce unused credit limits before you apply

You can model repayments and borrowing capacity with our home loan calculators before you speak to a broker.

Information checked on 4 October 2026. Policies vary by lender and change frequently. Confirm current requirements directly with your chosen provider before applying.

How Mortgagefy helps

  • Compare lender policies for trade and self-employed income
  • Explain how add-backs and BAS or accountant letters may be used
  • Prepare your application with the right documents for your situation
  • Explain the trade-offs between lenders in plain language

There is no obligation. We are a Sydney mortgage broker, and we will tell you plainly where a lender's policy is unlikely to suit your situation.

How it works

  1. 1

    Free chat

    A short call about how you are paid, your deposit and your goals.

  2. 2

    Compare options

    We look at which lender policies may suit how your income is structured.

  3. 3

    Prepare your documents

    We help you gather the documents your situation needs.

  4. 4

    Apply and settle

    We help you through application, approval and settlement.

Check your options in 2 minutes

Free, no obligation. Answer a few questions and a broker will follow up.

Your questions

Often yes, but the documents lenders ask for depend on how long you have been trading and the lender. Tax returns, BAS and an accountant's letter are commonly requested. No outcome can be guaranteed.
An add-back is a business expense, for example depreciation, that some lenders may add back to your income when assessing a loan. Which items are accepted varies by lender.
Some lenders consider shorter trading histories with supporting documents, while others require two years. Policies vary, so check before you apply.
Lenders often look at income across more than one year, and how they treat a drop in the latest year varies by lender.
Not always, but some lenders ask for a larger deposit from self-employed borrowers, and LMI may apply when your deposit is under 20%. Policies vary by lender.
It depends on your income, living expenses, debts and commitments, deposit and the lender's policy. You can get a starting point from our borrowing power calculator, then speak to a broker about how different lenders may treat your income. Any figure is an estimate only and not an approval.

Get your free Sydney tradie home loan assessment

Tell us how your business is set up, and we will explain how lenders may assess it. No obligation.

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This information is general in nature and is not personal financial, credit or tax advice. Policies vary by lender and change frequently. Confirm current requirements with your chosen provider and seek professional advice. Information checked 4 October 2026. Mortgagefy is an authorised credit representative under Australian Credit Licence 348324.