How to set your max bid (and stick to it)

The single discipline that separates profitable auction investors from the rest is almost embarrassingly simple: decide your maximum bid before the auction, and never move it during the auction. This guide gives you the math to set that number and the tactics to hold the line.

The 65% rule

BidWise's max-bid logic starts from a familiar investor heuristic: don't put more than ~65% of the after-repair value into a deal across all costs, then back out everything that isn't the bid itself.

Max bid = (ARV × 0.65) − rehab − quiet title − carrying costs

Worked example on a modest deal:

• ARV: $200,000
• 65% of ARV: $130,000 (your total all-in ceiling)
• Rehab: −$45,000
• Quiet title: −$3,500
• Carrying (≈12 months): −$6,000

Max bid = 130,000 − 45,000 − 3,500 − 6,000 = $75,500

So $75,500 is the most you can pay at the gavel and still protect your margin. Note what the 65% does: it bakes in your profit and a cushion for the ~7% selling costs and the things you haven't found yet. If the bidding passes $75,500, the deal no longer works — full stop.

Why you must subtract the unglamorous costs

New investors anchor on "ARV minus rehab" and forget the rest. Quiet title, nearly a year of carrying, and selling costs are real cash that comes out of the same spread. Leaving them out is how a "30% deal" quietly becomes a break-even one.

The psychological traps

Auctions are engineered to make you overpay. Watch for:

• Anchoring on ARV. A $200k ARV makes $90k feel cheap. It isn't, if your math says $75,500.
• Sunk-cost momentum. "I already drove out and did the title search" is not a reason to pay more.
• Competitive ego. The goal is to win deals, not auctions. Losing an overpriced auction is a win.
• Round numbers. Set your max to an odd, specific figure ($75,500, not $75,000) so you're not tempted to "just round up."

How to actually walk away

• Write your max on paper (or lock it in the app) before the sale starts.
• Decide your next-best property in advance, so walking away isn't walking away empty-handed — it's redirecting to plan B.
• If you feel the urge to raise it mid-auction, that's the signal to stop, not to continue. Your calmer pre-auction self had better information than your adrenaline does.

Discipline compounds. The investor who bids their number on 100 auctions and wins 8 of them will out-earn the one who "wins" 30 by paying $5k too much each.