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Equity calculator

See how much equity you have in your property, and how much of it a lender may let you borrow against.

Written by Jason Birks, credit representative 567217 ยท Last reviewed October 2026

Use a cautious figure. Lenders rely on their own valuation, which can come in lower than recent sales suggest.

Include every loan secured by this property, such as splits or a line of credit.

How much of the value to borrow against

Some professionals can go to 90% or more without LMI. See LMI waivers.

$0

estimated usable equity

Total equity (value less what you owe)$0
Most a lender may lend against the property$0
Your current loan as a share of the value0%
Usable equity$0

Total equity and usable equity

Total equity is the value of your property less what you owe. Usable equity is the part a lender will actually let you borrow against. Most lenders lend up to 80% of the value without lenders mortgage insurance, so that's the usual starting point.

Usable equity isn't money you automatically get. You still need the income to support the bigger loan, and the lender will order its own valuation first.

What people use equity for

Setting the new money up as its own loan split keeps it easy to track, and that matters for tax if it's used for investment. Your accountant can confirm.

Questions people ask

How much equity can I borrow against?

Usually up to 80% of your property's value, less what you owe, without paying LMI. Some lenders go higher with LMI, or with a professional waiver.

Do I need to refinance to use my equity?

Not always. Your current lender may increase your loan. Refinancing can make sense if another lender offers a better rate or values your property higher.

Will a lender value my property at what I think it's worth?

Not necessarily. Lenders use their own valuers, and the result can be lower than you expect. I can often get an indication before you apply.

This calculator is a guide only and doesn't take your personal circumstances into account. How much you can borrow depends on the lender's valuation, your income and expenses, and lender policy. Not financial or credit advice.

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