---
title: "Six Borrowing Power Hacks That Brokers Usually Charge For"
description: "A $20K credit card limit can reduce borrowing by $100K. HECS kills serviceability silently. These six strategies unlock $50K-$200K in extra borrowing capacity. Actuary-verified numbers inside."
author: Yan Zhu
date: 2025-01-09
category: Finance & Tax
url: https://premiumrea.com.au/blog/six-secrets-increase-borrowing-power-australia
tags: ["borrowing power", "mortgage tips", "credit card", "HECS", "refinancing", "serviceability", "property finance", "lending"]
---

# Six Borrowing Power Hacks That Brokers Usually Charge For

*By Yan Zhu, Co-Founder & Chief Data Officer at PremiumRea — 2025-01-09*

> I have been hunting for ways to stretch my borrowing capacity for months. Then a broker sat me down and walked through six adjustments that banks never advertise. One of them—cutting a credit card I thought was harmless—freed up $100,000 in borrowing power overnight.

Borrowing capacity is the single biggest bottleneck for property investors in Australia. You can find the perfect property, nail the due diligence, negotiate a brilliant price—and then watch the whole deal collapse because the bank says you cannot borrow enough.

The frustrating part? Most borrowing capacity constraints are self-inflicted. They are caused by financial habits that seem harmless but quietly destroy your serviceability in the bank's assessment model.

I trained as an actuary. I build models for a living. And when I ran the numbers on these six adjustments, I was genuinely surprised by how much capacity they unlock. We are not talking about marginal improvements. We are talking about $50,000 to $200,000 in additional borrowing power from changes you can execute this week [1].

Here they are. In order of how quickly you can action them.

## Secret one: cut your credit card (yes, even if you pay it off monthly)

This is the one that catches everyone off guard.

You have a credit card with a $20,000 limit. You are disciplined—you pay it off in full every month. Your balance is always zero by statement date. You think the bank sees a responsible borrower.

The bank sees something entirely different. The bank assesses you on the limit, not the balance. In its serviceability model, that $20,000 credit card is treated as a $20,000 annual liability, regardless of whether you use it [2].

A $20,000 credit card limit can reduce your borrowing power by $80,000 to $100,000 depending on the lender. That is not a rounding error. That is the difference between buying a $650,000 house in Cranbourne and being told you can only afford $550,000.

The fix is simple. Call your bank. Cancel the card. Or at minimum, reduce the limit to $2,000-$5,000. Some lenders allow you to close the card on the day of your loan application and will exclude it from the assessment. But check with your broker first—timing matters.

If you need a credit card for business expenses or travel points, switch to a debit card with similar benefits. The borrowing power you recover is worth far more than any frequent flyer program.

## Secret two: pay off your HECS/HELP debt

HECS is the silent killer of serviceability.

Most graduates carry their HECS debt for years without thinking about it. The repayments come out of your salary automatically, and the balance feels abstract. But in the bank's serviceability assessment, HECS reduces your available monthly income by the repayment amount—which at higher income levels can be significant [3].

Even a modest $25,000 HECS debt on a $90,000 salary triggers a 5.5% mandatory repayment ($4,950 per year or $413 per month). The bank deducts that $413 from your disposable income before calculating how much you can borrow. At a 6% assessment rate, that $413 per month of lost capacity equates to approximately $50,000-$80,000 in reduced borrowing power.

If you have savings sitting in a transaction account earning 1%, paying off your HECS in a lump sum before applying for a mortgage is one of the highest-return uses of that cash. You are not "losing" money—you are converting low-yield savings into $50K-$80K of additional property purchasing power.

There is a nuance here. If your HECS balance is $60,000+, the decision is more complex because you are deploying a large chunk of capital. Run the numbers with your broker. But for balances under $30,000, it is almost always worth paying off.

## Secret three: the 30-year reset

If you already own property and have been paying your mortgage for a few years, this technique can unlock substantial capacity.

Suppose you took out a 30-year loan three years ago. You now have 27 years remaining. Your committed monthly repayment is calculated on that 27-year term. If you refinance—switching to a new lender or renegotiating with your existing one—you can reset the loan back to a fresh 30-year term [4].

The immediate effect: your minimum monthly repayment drops because the same principal is now spread over 30 years instead of 27. That lower committed repayment directly improves your serviceability for the next property.

I know what some of you are thinking: "But I will pay more interest over the life of the loan." Technically true. But as property investors, we are playing a different game. We are optimising for borrowing capacity today so we can acquire more assets. Once the next property is secured and generating rental income, you can increase your voluntary repayments on the original loan at any time.

The 30-year reset is particularly powerful when combined with switching from P&I (principal and interest) to IO (interest-only) repayments on your existing investment loans. IO payments are lower, which means even more capacity freed up for the next purchase. The trade-off is a slightly higher interest rate—typically 0.1-0.2%—but the capacity gain usually outweighs the cost by an order of magnitude [5].

## Secret four: shadow rate cuts

Do not wait for the Reserve Bank to cut rates. Banks are doing it themselves—they just are not advertising it.

In competitive lending environments, banks offer what the industry calls "shadow cuts"—unadvertised discounts on both their lending rates and their internal assessment rates. These are not available through the bank's website or branch. They are negotiated through experienced brokers who know which lender is currently hungry for market share [6].

Why does this matter for borrowing power? Because the assessment rate—the hypothetical rate the bank uses to stress-test your ability to repay—is typically the actual rate plus a 3% buffer. If the standard rate is 6.5%, the assessment rate is 9.5%. But if a shadow cut brings your actual rate to 6.0%, your assessment rate drops to 9.0%. That 0.5% reduction in the assessment rate can add $30,000-$50,000 to your borrowing capacity.

The brokers we work with have relationships across twenty-plus lenders and know which institution is running aggressive pricing at any given moment. It changes monthly. A lender that was tight last month might be desperate for volume this month. Having a broker who monitors these shifts is not a luxury—it is a strategic advantage worth tens of thousands of dollars in capacity.

## Secret five: structure your ownership correctly

If you are buying everything in your personal name, you are leaving money on the table.

Sophisticated investors use trusts and corporate structures to segregate assets and protect borrowing capacity. When properties are held in a trust, the associated debt can sometimes be quarantined from your personal serviceability assessment—particularly if the trust generates positive cash flow and has a clean balance sheet reviewed by a CPA [7].

This does not mean everyone should rush out and set up a trust. For your first one or two properties, personal ownership is usually optimal—lower land tax, simpler lending, and access to negative gearing against personal income.

But by the time you are looking at property three or four, the conversation with your accountant about structure becomes essential. The difference between personal ownership with $1.5 million in cumulative debt dragging on your serviceability, versus a trust holding two positive-cash-flow properties with debt ring-fenced, can be the difference between buying your next property and being told the bank's computer says no.

Speak to your accountant before you sign the next contract. Not after.

## Secret six: marry the asset, date the rate

This is the golden rule. And it is the one most investors get backwards.

Stop obsessing over the lowest possible interest rate. Here is why.

If Lender A offers you 6.0% but will only lend $500,000, and Lender B offers 6.5% but will lend $700,000—take Lender B. Every time [8].

The additional $200,000 in borrowing capacity lets you buy an asset worth $700,000 instead of settling for $500,000. At an 8% annual appreciation rate, the $700,000 property generates $56,000 in capital growth per year versus $40,000 for the $500,000 property. The difference in interest cost? About $3,000 per year.

You are paying $3,000 extra in interest to capture $16,000 extra in annual growth. That is a 5:1 return on the cost differential.

And here is the clincher: you can always refinance to a lower rate later. Rates change. Products change. Lenders get competitive. But the asset you buy today, at today's price, in today's market—that opportunity does not wait.

I have seen too many investors miss great properties because they spent three months shopping for the lowest rate instead of locking in the asset. The rate is temporary. The asset is permanent.

> "Every percentage point of borrowing power you unlock translates to real property you can own," says Yan Zhu, Co-Founder and Chief Data Officer at PremiumRea. "The six adjustments in this article, applied together, can unlock $100K-$200K in capacity. That is not abstract. That is the difference between one investment property and two."

> Joey Don adds: "We tell every client the same thing: marry the asset, date the rate. You can always refinance the rate. You cannot always buy back the asset."

## References

1. [PremiumRea internal analysis. Combined impact of six borrowing power strategies: $50K-$200K additional capacity depending on individual circumstances.](#)
2. [APRA, 'Prudential Practice Guide APG 223 — Residential Mortgage Lending', 2022. Credit card limits assessed at full liability regardless of balance.](https://www.apra.gov.au/)
3. [Australian Taxation Office, 'HELP Repayment Thresholds and Rates 2022-23'. Mandatory repayment rates by income bracket.](https://www.ato.gov.au/Rates/HELP,-TSL-and-SFSS-repayment-thresholds-and-rates/)
4. [Mortgage Choice, 'How Refinancing Can Improve Your Borrowing Power', 2022. 30-year term reset mechanics and serviceability impact.](https://www.mortgagechoice.com.au/)
5. [PremiumRea finance advisory. IO vs P&I rate differential typically 0.1-0.2%, with IO strongly recommended for investment properties to maximise tax-deductible interest.](#)
6. [Australian Broker, 'Shadow Rate Cuts and Lender Competition', 2022. Unadvertised rate discounts available through broker channels.](https://www.brokernews.com.au/)
7. [PremiumRea tax advisory. Trust structures can quarantine investment debt from personal serviceability when trust is CPA-audited and positively geared.](#)
8. [PremiumRea investment philosophy. 'Marry the asset, date the rate': capacity to acquire outweighs marginal rate savings. $200K extra borrowing at 0.5% higher rate = $3K extra interest vs $16K extra capital growth at 8% appreciation.](#)

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Source: https://premiumrea.com.au/blog/six-secrets-increase-borrowing-power-australia
Publisher: PremiumRea (Optima Real Estate) — Melbourne buyers agent