Free Perth Mortgage Calculator

Perth mortgage calculator.

Know your numbers before you move. Calculate your Perth home loan repayments in seconds — weekly, fortnightly, or monthly. Whether you're buying, upgrading, or planning your next move after a sale.

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P&IPrincipal & Interest
I/OInterest Only
3Repayment Frequencies
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Perth property interior — One Percent Realty WA mortgage calculator
Mortgage Calculator — Perth & All WA

Your Loan. Your Repayments.

Estimate your monthly repayments in seconds. Enter your loan amount, interest rate, and loan term to get a clear breakdown of what to expect.



Your repayments would be:

per week per fortnight per month

Total paid:

Total interest paid:

Selling Before You Buy?

The More You Keep From Your Sale,
The More You Have For Your Next Home

Most Perth sellers pay a typical agency 2.44% in commission — on an $800,000 sale, that's $19,520 gone before you've started thinking about your next purchase.

We charge 1% + GST. On that same $800,000 sale, our fee is $8,800. The $10,720 difference could reduce your loan amount, boost your deposit, or simply stay yours.

 
$10,720 is roughly three months of repayments on a $600,000 loan at 5.5% over 30 years — before you've moved in.
Typical Perth Agency 2.44% commission inc. GST
 
$600k sale → $14,640 in fees $800k sale → $19,520 in fees $1m sale → $24,400 in fees
One Percent Realty WA 1% commission + GST
 
$600k sale → $6,600 in fees $800k sale → $8,800 in fees $1m sale → $11,000 in fees
 
"
Other agents quoted me around $20,000. My total cost with Lee was $8,000 including photos — and he sold in less than two days for more than I expected.
Carla Halliday — Perth Seller Read the full Google review →
Full Service at 1% + GST

Full Service. One Percent.

A lower commission rate in Perth should never mean accepting less. Everything a traditional agency provides — at 1% + GST.

Professional Photography

High-resolution photography and floor plans as standard. First impressions on realestate.com.au drive enquiry — we take them seriously.

Full Portal Marketing

Listed on realestate.com.au, domain.com.au, and our channels — reaching local, interstate, and international buyers searching WA property.

Experienced Local Agents

Perth-based agents who know your suburb. Not a franchise, not a call centre — 20+ years of agent experience selling across the Perth metro area.

Home Opens & Viewings

Structured home opens and private appointments at times that suit you. Detailed buyer feedback after every session — no guesswork.

Negotiation & Contracts

Direct negotiation on your behalf — strategically, with your best result as the only priority. Full contract management to acceptance.

Settlement Support

Full support through conveyancing and available all the way to settlement day. No handoff, no disappearing once the contract is signed.

Planning Your Perth Move

Using a Mortgage Calculator to Plan Your Next Perth Property

A mortgage repayment calculator is one of the most useful tools when planning a property purchase in Perth or anywhere in Western Australia. It helps you understand what your monthly, fortnightly, or weekly repayments will look like — and how a change in rate or loan term shifts your long-term position. Use the calculator above to model scenarios before speaking with your mortgage broker or lender, and our WA stamp duty calculator to estimate your purchase costs.

Selling in Perth before your next purchase? The single biggest controllable number in your property finances is not your interest rate — it is your selling costs. On a $750,000 sale, the Perth average of 2.44% including GST comes to $18,300. Our fee is $8,250, leaving you $10,050 better off. Our commission savings calculator shows your exact figure.

How long does it take to sell a house in Perth? Our average days on market is 9. That means less time carrying two properties, less uncertainty, and a faster path to your next purchase. You can see how we sell your home, step by step.

One Percent Realty WA offers a free property appraisal across the Perth metropolitan area, including Perth CBD, East Perth, West Perth, North Perth, South Perth, Northbridge, Leederville, Highgate, Inglewood, Mount Lawley and Maylands. If you are thinking about selling before buying, we will give you an honest market valuation and show you exactly what our 1% + GST commission means for your next deposit.

Commission Savings Calculator →
 
Sell Smart. Keep More. Buy Better.

Ready to Sell Your Perth Property?

Book a free, no-obligation property appraisal with our local Perth team. We'll tell you what your home is worth, what our 1% fee means in dollars, and exactly how we plan to sell it.

Sell For Only 1% (+GST) Commission

YOUR TRUSTED REAL ESTATE EXPERT