Fantasy Football Auction Inflation Calculator
Keepers pull more value than money out of your auction pool. Punch in the keeper totals and see exactly what every “$20 player” will really cost.
Auction Inflation Calculator
Keepers drain more value than money from the pool — this is what every listed dollar really costs on draft day.
How it works
In a keeper auction, every kept player removes two things from the draft pool: the money his manager pays to keep him, and the value he would have sold for on the open board. Those two numbers are almost never equal — that’s the whole point of keeping someone. You keep the $8 breakout who’s now worth $35, not the $35 player who’s worth $35.
That asymmetry is what creates inflation. When keepers cost less than they’re worth, the room is left with more money chasing less value, and every remaining player’s price gets bid up past their sticker value. The rate is:
inflation rate = (total budget − keeper cost) ÷ (total budget − keeper listed value)
Multiply any player’s listed auction value by that rate and you get his true expected price in your room.
A worked 12-team example
Twelve teams at $200 each puts $2,400 in the pool. Say the league keeps a handful of players for a combined $360 in keeper cost, but those same players carry $600 of listed auction value. Draft day now has $2,040 of money chasing $1,800 of value:
($2,400 − $360) ÷ ($2,400 − $600) = 2,040 ÷ 1,800 = 1.133
That’s +13.3% inflation. The $30 wide receiver in your value guide should actually go for about $34, and the $70 stud for about $79. If you walk in anchored to sticker prices, you’ll “lose” every early nomination and panic-spend late.
It can run the other way, too. If your league lets managers keep players at above their value — salary bumps, escalating contracts — keeper cost can exceed keeper value and the rate drops below 1. That’s deflation: less money chasing more value, and the bargains show up at the top of the board.
The tactical takeaway
Inflation is not spread evenly across the draft — it concentrates early. Every time a player sells near sticker price, the room’s surplus money survives to inflate the players still left. The counterintuitive play: in an inflated room, “overpaying” early is often the discount. Paying $36 for a $32 player at +13% inflation is exactly fair — and by the endgame, when everyone else is flush and the board is thin, the same surplus dollars evaporate into $9 bids on $4 players. Spend into the inflation before it finds you.
Once you know your rate, plan the actual spend with the auction draft budget calculator — set your position allocations against inflation-adjusted prices instead of sticker values.