Quick answer
Before using home equity for your business, ask your accountant how the interest would be treated for tax, which entity should borrow, whether the business can carry the repayments, how the exit would work, what the tax consequences of any asset sale would be, and how ATO debts and lodgments affect the plan. Bring your property figures, the amount, the purpose and your exit, so the meeting produces clear answers rather than general advice.
Key points
- Ask about tax treatment of the interest before you choose a structure.
- Ask which entity should borrow and which should give security.
- Ask for an honest view of cash flow, not a best case.
- Ask what a refinance or sale exit would need from the business's records.
- Bring the numbers, so the meeting is specific.
Most business owners have an accountant who knows their numbers better than anyone. Yet a surprising number of second mortgages are arranged without the accountant hearing about them until the next tax return. That’s a missed opportunity. One focused meeting before you decide can sharpen the plan, catch a tax issue early, and make the eventual application stronger.
This guide gives you the questions to take into that meeting, grouped by theme, and explains why each one matters.
How should you prepare for the meeting?
Accountants give their best advice when they have specifics. Send these a few days before:
- The property: estimated value, current loan balance, who’s on the title.
- The amount and purpose: what the business needs and why.
- The exit: how you expect to repay and roughly when.
- The business: latest BAS, most recent financial statements, current ATO position.
- The alternatives you’ve considered, even briefly.
If you’ve run your numbers through the equity decision helper, print the read-out. It gives your accountant the property side at a glance.
Questions about tax
1. How would the interest on this loan be treated for tax?
The ATO’s guidance on business deductions explains that interest on money borrowed to produce assessable income, or to buy income-producing assets, can be deductible. How that applies depends on how the borrowed money is actually used and which entity borrows. Ask your accountant to confirm the treatment for your specific plan, and whether keeping the business borrowing in a separate loan makes the records cleaner.
2. If the money is paying an ATO debt, how does that change the comparison?
From 1 July 2025, the ATO confirms that general interest charge and shortfall interest charge incurred on or after that date are no longer deductible. That makes leaving a tax debt on a payment plan more expensive in after-tax terms than it used to be. Ask your accountant to compare the after-tax cost of a payment plan with borrowing, over the realistic time each would run. Our guide to GIC and tax debt funding choices covers this in depth.
3. If my exit is selling an asset, what tax would that trigger?
Selling shares, an investment property or business assets can trigger capital gains tax, and business assets can raise GST and depreciation questions. Knowing the after-tax proceeds tells you whether the exit actually covers the loan.
4. Does anything about using the home affect its tax status?
Borrowing against the home doesn’t by itself change how it’s used. But if the plan involves running the business from home or renting part of it, ask how that interacts with the main residence exemption.
Questions about structure
5. Which entity should borrow?
The borrower might be you personally, your company, or a trust. business.gov.au’s overview of business structures is a reminder that sole traders, partnerships, companies and trusts each work differently. The right borrower affects tax treatment, liability and how the loan appears in the business’s accounts.
6. Which entity should give the security, and what does that mean for me?
If the company borrows but your home is the security, you’ll typically sign as mortgagor and possibly as guarantor. Ask your accountant, and your lawyer, what that means for your personal position if the company has trouble.
If the answers so far make the plan look sound, this is a natural point to test it with a lending specialist. The enquiry takes about a minute and doesn’t involve a credit check.
Questions about cash flow
7. Can the business genuinely carry this, including in a bad quarter?
Ask for an honest view, not a best case. Your accountant can see seasonal patterns, tax timing and owner drawings that a quick look at the bank balance hides. Ask them to sketch a month-by-month forecast with and without the loan, including a downside scenario. Our guide to stress-testing before you borrow shows how.
8. Is the business’s problem a timing gap or a profitability problem?
This is the question that most often changes the decision. A timing gap can be bridged. A profitability problem needs fixing first, and borrowing against the home only postpones it. Your accountant is the best person to tell you which you have.
9. Are there cheaper levers we haven’t pulled?
Debtor collections, supplier terms, pricing, stock levels, idle assets. Your accountant may spot a combination that reduces the amount you need, which is the single best protection for the home.
Questions about the exit
10. If my exit is a refinance, what will a future lender need to see?
Lodged returns, current BAS, a clean ATO position, trading figures that support the refinanced loan. Ask your accountant what’s missing and how long it would realistically take to put in place. That timeline should set the second mortgage’s term.
11. Can you write a letter supporting the exit if a lender asks?
Some lenders find an accountant’s letter helpful, for example confirming that returns are being prepared or that the business’s figures support a refinance. Ask whether your accountant would be comfortable providing one, and what they’d need.
12. What would make you nervous about this plan?
It’s the most useful question of all. Accountants are often too polite to volunteer concerns unprompted. Asking directly gives them permission to tell you.
What to do with the answers
After the meeting, write a short summary:
| Topic | Accountant’s view | Action |
|---|---|---|
| Tax on interest | ||
| Entity to borrow | ||
| Cash flow with loan | ||
| Gap or profitability? | ||
| Cheaper levers | ||
| Exit requirements | ||
| Concerns raised |
If the summary reads well, you have a stronger plan and a better story for any lender. If it raises red flags, you’ve saved yourself from a decision that wasn’t right, and you can look at alternatives instead.
How does this help the application?
Lenders assessing a business second mortgage look closely at the purpose, the property and the exit. An owner who can explain the tax treatment, the borrowing entity, a realistic cash flow forecast and a documented exit is a clearer proposition. business.gov.au’s guide to applying for a business loan makes the same point: preparation beyond filling in forms is what makes applications succeed.
It also helps you. Going into a conversation knowing your numbers means you’re evaluating options, not being sold one.
A note on who does what
Your accountant advises on tax, structure and the business’s finances. A lawyer advises on the loan documents and any guarantees. A lending specialist explains what finance is realistic and arranges it. Each sees a different part of the picture. Getting all three aligned before signing is the calmest way to borrow against property.
How should you use the accountant’s time well?
Accountants charge for their time, and a vague meeting produces vague advice. Send your one-page summary and the questions in advance, ask for a forty-five minute meeting, and agree at the start what you’d like to leave with: a view on tax treatment, structure, cash flow and the exit. If some questions need more work, such as a full forecast or a tax calculation on an asset sale, agree what that will involve and when you’ll hear back. It’s a modest cost compared with the amount you’re considering borrowing, and it often pays for itself in a smaller or better-structured loan.
Bring your accountant’s answers to the conversation
Once you’ve had the meeting, a short enquiry is the natural next step. Include what your accountant said about the exit and any concerns they raised. One specialist will read it and give you a straight answer, without a credit check at that stage and without sending your details to a stack of lenders. The more accurately you describe the property, the amount and how it will be repaid, the more useful that answer will be.
Frequently asked questions
Do I need my accountant's sign-off to get a second mortgage?
Not usually, but their input often strengthens the decision and the application, especially on tax, structure and the exit. Some lenders ask for an accountant's letter in certain situations.
Is interest on a second mortgage tax deductible?
The ATO's guidance says interest on money borrowed to produce assessable income can be deductible. Whether it applies to you depends on how the money is used and who borrows, which is exactly what to ask your accountant.
What should I bring to the meeting?
Your property value estimate, home loan statement, the amount and purpose, your intended exit and timing, recent business figures and any ATO statements. A one-page summary helps.
What if my accountant advises against it?
Listen carefully to the reasons. They may see something in the business's numbers or tax position that changes the picture. Ask what would make it sensible, or what alternative they'd suggest.