Should You Roll Business Loans Into Your Home Mortgage?

Rolling business loans into your home mortgage can cut the interest rate and ease cashflow, but it also puts your house on the line and usually stretches short‑term debt over 25–30 years. In Australia, it only really makes sense when it clearly improves cashflow, total interest, and risk to your family home — not just one of those in isolation.

Here’s how to decide, and what to do this week if you’re considering it.

Compare the cashflow, risk and total interest before rolling business debt into your home loan.

Quick test: when consolidation can make sense

Use this 5‑point filter before you go too far down the path.

1. Your current business facilities are unsustainably expensive. Think credit cards at 18–22% p.a. or an overdraft that’s always maxed.

2. You have solid, provable income and a stable business. Lenders will stress‑test your mortgage and any refinanced debt at ~3% above the actual rate (APRA buffer), so you need headroom.

3. Total repayments will still be safe under stress. In a world where Roy Morgan shows over 30% of borrowers ‘At Risk’ of mortgage stress, you want your P&I repayments comfortably under 30–35% of after‑tax income even with that 3% buffer.

4. You’re prepared to keep business and home debt in separate splits. As explained in [/insights/equity-rich-cashflow-tight-eastern-suburbs-business-investment](Using Eastern Suburbs Home Equity Safely For Business And Investing), structure matters more than the headline rate.

5. You’re willing to commit to an actual payoff date. If you roll a 5‑year business loan into a 30‑year home loan with no plan, you’re likely just kicking the can.

If you fail any of these, consolidation is a red flag, not a solution.

Pros: why people refinance business debt into a mortgage

1. Lower interest rate (usually)

Home loans are almost always cheaper than unsecured business loans and overdrafts.

Worked example (illustrative only):

• $150,000 business overdraft at 11% interest‑only
• Compare to $150,000 P&I split on your mortgage at 6.5% over 10 years

Approx annual interest year 1:

• Overdraft: $16,500 (no principal reduction)
• Home loan split: ~$9,400 interest, plus ~$7,900 principal

You pay similar total cash each year, but your balance falls faster and rate is lower.

2. Smoother cashflow

Replacing an always‑maxed overdraft with a fixed P&I schedule can:

• Reduce monthly volatility
• Make it easier to meet the bank’s servicing tests for your home loan

This aligns with how lenders view business debt add‑backs in [/insights/business-interest-lease-payments-add-backs-separate-personal-commercial-debt](Using Business Interest And Leases To Boost Home Loan Borrowing).

3. Simpler banking (sometimes)

One lender, less admin, and clearer monthly commitments.

But don’t confuse “simple” with “safe”. Simpler can still be much riskier if you over‑collateralise the family home.