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Free auction max bid calculator

Know your walk-away bid before the hammer.

The room gets loud and the price climbs. Set your resale value, your works and the profit you need, and this gives you the highest bid that still makes money, after stamp duty, buyer's fees, finance and selling costs. No sign-up.

The exit
What it sells for once finished
The works
Council tax, insurance, utilities
The auction
Stamp duty is worked out at additional-property rates
In the auction's conditions of sale
Finance (0% LTV if cash)

Your walk-away bid

Maximum bid—
Profit at that bid—
Due on the day
Deposit (usually 10%)—
Buyer's fee and premium—
The full cost at that bid
Stamp duty—
Buying legals—
Works with contingency—
Bridging interest and fees—
Holding costs—
Selling costs—
Rounded down to the nearest £100. Completion is often 28 days after the hammer; check the legal pack.
The honest version

Your bid is only as good as the resale value you typed in.

PropertyPredator checks the resale value against real sold prices on the street, and on Hunter, Auction Catalogue Mode reads every lot in a catalogue, ranks the deals and gives you the most you should bid on each one, with buyer's premium and stamp duty solved in. For postcodes in England, Wales and Scotland.

✓ Resale value from real sold prices✓ Max-offer solver✓ Auction Catalogue Mode (Hunter)
Check a lot properly — free account →
Free to start. No card.

Auction bidding — questions

Why is my maximum bid so much lower than the resale value?

Because every cost comes out of the same pot: stamp duty, buyer's fees, legals, works, finance, holding and selling, and then your profit. The calculator finds the bid where what's left over equals the profit you need.

What do I pay on auction day?

At most traditional auctions you exchange contracts when the hammer falls and pay a deposit, usually 10%, plus the auctioneer's buyer's fee. The rest is due on completion, often 28 days later. Modern-method auctions work differently, with a reservation fee. Always read the conditions of sale.

Should I read the legal pack?

Yes, and have a solicitor read it before you bid. Special conditions can add costs, such as the seller's search fees or arrears, that change your maximum bid.

Is this financial advice?

No. It's a calculator using the figures you enter. Always do your own due diligence and take professional advice before bidding.