How Much Cash Buffer Should I Keep After Paying My Home Deposit?
No single figure exists for a post-deposit cash buffer — the settlement costs it usually covers, and the factors that decide how much you need.
How much cash buffer should I keep after paying my home deposit?
There’s no single verified figure for how much to keep aside after your deposit is paid. No government body or lender publishes a standard “buffer” amount, and any specific number handed to you as a rule of thumb is someone’s opinion rather than a verified fact. What you actually need depends on two things: your settlement adjustment (the balancing amount worked out between you and the seller at settlement) and the condition of the property itself. A near-new apartment with a straightforward settlement generally needs a smaller buffer than an older house that might need repairs soon after you move in.
Settlement adjustment is worth defining early, since the buffer question turns on it. It’s the amount your conveyancer or solicitor calculates at settlement to divide costs like council rates and water charges fairly between you and the seller, based on where the settlement date falls within a billing period. It can run either way — you might owe the seller a top-up, or receive a credit — and the exact figure only becomes clear close to settlement. That’s one reason a fixed buffer number can’t be verified as “enough” for every purchase.
What costs does a cash buffer generally need to cover?
A buffer set aside after the deposit is typically there to absorb costs that land after exchange but sit outside the deposit itself. None of these has a single published dollar figure that applies to every purchase; our broader guide to the hidden costs of buying a home in Australia runs through the full list, and each is summarised below with what’s actually verified.
| Cost category | Typically due | Verified figure? |
|---|---|---|
| Settlement adjustment | At settlement | No — calculated per contract |
| Stamp duty | Within ~30 days of settlement | Rate set per state — see duty guide |
| Conveyancing fees | Before or at settlement | No published range — get quotes |
| Building/pest inspection | Usually before exchange | No published range — get quotes |
| Moving and reconnection | After settlement | No published range — varies |
Settlement adjustments
As above, the adjustment figure depends on your settlement date and what the seller has already paid in advance. Your conveyancer calculates it from the contract, and the mechanics can differ from state to state depending on the standard contract of sale used — ask your conveyancer to estimate the figure once a settlement date is set, rather than guessing at one now.
Stamp duty
Stamp duty is a one-off state or territory transfer tax, and buyers typically need to pay it within 30 days of settlement, according to Moneysmart. The rate itself is set separately by each state and territory rather than as one national figure — see our guide to first home buyer stamp duty concessions by state for how the current thresholds compare.
Conveyancing and inspection costs still outstanding
No government source — not NSW Fair Trading, not Moneysmart, not Consumer Affairs Victoria, not any state law society page — publishes a typical dollar range for conveyancing fees or for a building and pest inspection report. Both are professional fees that vary by property, provider and how much you’ve already paid before settlement. Get quotes rather than budgeting to an assumed figure; our guides to what a conveyancer does and how much conveyancing fees cost set out why no verified range exists for either.
Moving-in and reconnection costs
Removalists, connecting electricity, gas, water and internet, and re-keying locks are all real costs that land in the weeks around settlement. No authoritative source publishes typical figures for these either — they depend on how far you’re moving, how much you own, and which providers you choose.
Repairs the property might need
If your building and pest inspection flagged anything, or if the property is older, part of your buffer may need to cover repairs soon after you move in — anything from a hot water system to a fence line. How much this needs varies enormously by property, which is exactly why one buffer figure can’t be verified as sufficient for every buyer.
What if you need to withdraw during a cooling-off period?
As at July 2026, NSW gives buyers 5 business days from exchange to withdraw, Victoria gives 3 clear business days from signing, and Queensland gives 5 business days from receiving the signed contract — none of these apply if you bought at auction. Withdrawing during this window isn’t free in most states: NSW’s withdrawal cost is 0.25% of the purchase price, Victoria’s is the greater of $100 or 0.2% of the price, and Queensland’s is up to 0.25%.
The remaining five jurisdictions each work differently again. South Australia gives buyers 2 clear business days, and if you withdraw the vendor can keep only up to $100 of any money you’ve paid. The ACT gives 5 working days, with withdrawal fixed at 0.25% of the purchase price. The Northern Territory requires a 4 business day cooling-off period on contracts not sold at auction, with no withdrawal cost at all. Western Australia and Tasmania have no statutory cooling-off period for a residential purchase at all — a cooling-off right only exists there if it’s specifically negotiated into the contract.
If cooling-off is still open on your contract, check what — if anything — withdrawing would cost in your state or territory before you treat it as a fixed line item in your buffer.
What should shape how big your buffer is?
Several factors point toward a bigger buffer, and none of them resolve to one number:
- Property age and condition — an older property, or one with an ambiguous inspection report, carries more repair risk than a newly built home.
- How much is still outstanding at settlement — if your loan doesn’t capitalise stamp duty or lender fees, you’ll need those amounts in cash rather than folded into the loan.
- Distance and scale of your move — moving interstate or furnishing an empty property costs more than moving a few suburbs over with your existing furniture.
- Whether cooling-off is still open — see the section above, if it applies to your purchase and state.
- Your own income stability — a buffer for settlement costs is a separate question from a general emergency fund, and how large that fund should be is something a financial adviser can help you think through.
They don’t combine into one verified dollar figure — they’re the inputs a conveyancer, mortgage broker or financial adviser would ask about if you asked them to help you plan.
How do you land on the right number for you?
That isn’t something this article can answer for you, because it depends on your specific settlement adjustment, your property’s condition and your own financial situation — all of which are personal to your purchase. A conveyancer or solicitor can give you an estimate of your adjustment figure once you have a settlement date, and a mortgage broker or financial adviser can help you plan around it alongside the rest of your finances. If you’re still working out how big your deposit itself needs to be before you reach this stage, see our guide to how much deposit you need for a first home in Australia, and our step-by-step guide to the stages of buying a house in Australia for where settlement sits in the overall timeline.
