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918 Property Solutions calculator

Know your exit.
Find your offer.

Work backward from expected resale value to find the most you can pay while protecting target profit after GST, income tax, renovation costs, holding costs and selling costs.

The backward deal equation
Net resale−Project costs− Pre-tax profit=Maximum offer

Every cost gets a seat at the table before the offer is made.

01 / Assumptions

Build the deal

Property deal
Saved deals stay in this browser.
GST treatment
GST-registered property traderCalculates output GST on sale and credits on GST-inclusive project costs.
Purchase price includes claimable GSTTurns the net purchase allowance into the GST-inclusive maximum offer.

Reference: Inland Revenue GST guidance. GST on property can depend on registration, land use and whether a transaction is zero-rated.

Exit and profit

Default income tax rate references Inland Revenue's 28% rate for most companies. Resale value, target profit and timing are user-entered assumptions.

Renovation costs
Due diligence and acquisition costs
Costs of sale
Monthly holding costs

Choose monthly costs if timing matters, or enter one total if you already know the full holding-cost allowance.

Finance costs

Choose monthly interest if borrowing costs depend on time, or enter a total finance-cost allowance. Keep at zero for a cash-funded project.

03 / Saved workspace

Compare your deals

Save several properties, then compare their offer ceilings and project assumptions side by side.

0 saved deals
No saved deals yet. Add an address above and save the current calculation to begin comparing properties.
Read before using

A useful guardrail,
not tax advice.

GST treatment for property transactions can depend on the buyer, seller, land use, and whether the transaction is zero-rated. Income tax treatment can also vary. Confirm your assumptions with a New Zealand accountant and solicitor before making an offer.

GST reference: Inland Revenue Company tax reference: Inland Revenue Costs, resale value, profit target, project length and finance costs are user-entered assumptions.
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