Turning Messy Overdrafts Into Borrowing Power Before Your Home Loan

Most business owners think, “I’ll sort my overdraft once the home loan is approved.” That’s backwards. For self‑employed borrowers, the way your overdraft and working capital are structured can be the difference between a smooth approval and a last‑minute decline.

In plain terms: before you apply for a home loan, you should review and tidy your overdraft and working capital facilities so they are clearly business‑purpose, sensibly sized, and not propping up personal spending. Lenders will assess these limits and transactions when they decide how much you can safely borrow.

What I tell my clients: you don’t need a perfect balance sheet, you need a bank‑ready one.

Why your overdraft matters more than the balance you see today

A recent client, a cafe owner, came in with a $50,000 overdraft sitting maxed at around $48,000 most of the year. She’d assumed lenders would just look at the $2,000 undrawn. In reality, the bank assessed the full limit and the pattern of use and concluded, “This business is under‑capitalised.” Her borrowing power dropped by more than $150,000.

How lenders actually view business overdrafts

Most Australian lenders will:

1. Include overdraft limits as ongoing debt commitments, even if you’re not fully drawn.
2. Stress‑test those commitments at interest rates 3% above current rates (APRA buffer), the same way they do for home loans.
3. Scrutinise your statements for personal spending in business accounts, late fees and “living off the overdraft”.

This means a “lazy” overdraft or revolving working capital facility can hurt you three ways at once:

• It reduces your assessed capacity.
• It signals weak cash management.
• It blurs the line between business and personal finances, which is already a known red flag.

If you haven’t read it yet, my deeper piece on how banks look at combined business and home debts is worth a look: /insights/how-lenders-stress-test-combined-business-and-home-loans-australia.

The core goal: stable business cash flow, clean personal cash flow

Restructuring overdrafts and working capital is not about starving your business so a bank computer says “yes”. The goal is:

1. Keep enough liquidity so the business can breathe.
2. Present that liquidity in a way banks understand and are comfortable with.
3. Remove noise and mixed‑purpose behaviour that scares credit teams.

The mistake I see most

The biggest mistake is using business overdrafts and working capital lines as an all‑purpose wallet:

• BAS and super one week.
• Groceries and Netflix the next.
• A “quick” transfer to top up the family offset.

You can see this same pattern in clients using home offsets/redraws as business working capital, which I warn against in multiple guides. It concentrates risk on the family home and muddies tax deductibility.

From a lender’s perspective, this looks like:

• Uncontrolled drawings.
• No real separation between business and personal life.
• Potential for mortgage stress if anything goes wrong.

Step 1 this week: map your current working capital picture

You can do a decision‑grade review in under 60 minutes.

1. List every facility that behaves like working capital

Include:

• Overdrafts on trading accounts.
• Business credit cards.
• Revolving lines of credit.
• Short‑term loans regularly rolled over.
• The “temporary” use of home loan redraw or offset for wages/BAS (which is really business working capital in disguise).

Write down for each:

• Limit (e.g. $80,000 overdraft).
• Typical balance (e.g. averages around $40,000 drawn).
• Purpose in practice (stock, wages, tax, or just plugging general holes?).
• Security (secured by business assets, the home, or unsecured?).

2. Pull the last 3–6 months of statements

Highlight:

• Any personal transactions on business facilities.
• Regular transfers to or from personal accounts.
• Frequent periods when you’re right at your limit.
• Late fees, dishonours or informal excesses.

This is exactly what a bank credit analyst will do, just without the highlighter.

3. Run a quick “what if” stress test

Ask your broker or accountant to model:

• Your current facilities at a rate 3% higher than today.
• Your current home loan, plus your target home loan, at the same buffered rate.

If the numbers are already tight at today’s rates, they’re going to be very tight at APRA’s buffers.