Why does a bid's percent matter, not just the dollar amount?

The same dollar bid is a different share of your budget depending on how much you've already spent. A $12 bid is 12% of a $100 starting budget, but it's 20% of a $60 remaining budget - the percent shows how big a bite the bid takes out of what you actually have left, which the dollar amount alone doesn't.

What happens to FAAB budget a team doesn't spend?

That depends on each league's own settings, so check with your commissioner. What's consistent everywhere: a winning bid is subtracted right away and doesn't come back during the season - there's no refund for a losing bid, either.

How can kids use this calculator to practice math?

Type in a budget, what’s left, and a bid, then turn on "Show the math" to see the division and subtraction spelled out step by step - the same percent-of-a-budget and whole-dollar-rounding skills used in the printable worksheet below.

Free calculator + printable worksheet

FAAB Bid Calculator

FAAB - Free Agent Budget, sometimes just FAB - is one of two ways leagues decide who wins a waiver-wire player: instead of a turn-order priority list, every team gets an imaginary season-long budget and places a private dollar bid on the player they want. The highest bid wins, and that amount comes out of the winner's budget for the rest of the season - it doesn't come back.

Try the calculator Get the printable worksheet

Finds: Percent of budget, dollars left, weeks left
Also does: Percent ↔ dollars, either direction
Includes: A printable worksheet + answer key
Uses: No player data - pure math, your inputs

Yahoo's default FAAB budget is $100 - but commissioners can set a different number, so always check your own league's settings before assuming $100 is right.

No player data collected - every number here is one your child types in.

Try it yourself

FAAB bid calculator

Type in a starting budget, what's left, and a bid - real, made up, or from your own league - and see exactly what percent of your budget that bid uses, and what's left afterward.

Starting budget ($)Budget left ($)Bid ($)Average bid per week ($, optional)

Show the math

What that bid means

Percent of starting budget: 0%
Budget left after this bid: $100

$0 bid

out of $100 for the season ($100 left before this bid).

Built for ages 8–13

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Quick convert

Percent ↔ dollars converter

Some leagues talk about bids as a percent of budget, others in flat dollars. Set a budget once, then convert either direction.

Budget ($)

Percent (%)

15% of $100 is a $15 bid (rounded to the nearest dollar).

Bid ($)

$23 out of $100 is 23% of the budget.

Practice

Printable FAAB worksheet

Five practice situations, five FAAB math problems, one answer key. The managers and numbers are made up for practice - not real leagues or real bids.

Free printable · Grades 3–8

FAAB Budget Practice

Work out each practice manager's FAAB math. Show your work.

NameDate

Manager	Situation	Find
Practice Manager A	$100 starting budget, nothing spent yet, bids $18	Percent of the starting budget this bid uses
Practice Manager B	$100 starting budget, $60 left, bids $12	Percent of what's left (not the starting budget)
Practice Manager C	$150 budget, wants to bid exactly 15%	Dollar amount for a 15% bid, rounded to the nearest dollar
Practice Manager D	$45 left, bids $20 this week	Budget left after this bid
Practice Manager E	$45 left, averages $9 in bids per week	How many more weeks the budget lasts at that pace

Answer key (kept off the printed page)

Practice Manager A: 18%
Practice Manager B: 20%
Practice Manager C: $23
Practice Manager D: $25
Practice Manager E: 5 weeks

For parents and teachers

What math skills this practices

Built for roughly grades 3-8 - old enough for multi-step percentage problems, young enough that division and rounding are still fresh practice. No prior fantasy football knowledge is required.

Percentages

A bid divided by a budget is a percent - the same "part ÷ whole" relationship kids see in school, applied to a real weekly decision instead of a worksheet fraction.

Subtraction

Every bid subtracts from what is left: budget − bid = money remaining. Simple arithmetic, but the running balance makes each subtraction matter for the next decision.

Division

Percent of budget (bid ÷ budget) and weeks of budget left (money left ÷ average weekly bid) are both division problems with numbers that rarely divide evenly.

Rounding

FAAB bids are placed in whole dollars, so converting a percent into a bid means rounding - 15% of $150 is $22.50, which rounds up to $23.

Where to go next

More ways to play, learn, and practice the math behind fantasy football.

FAQs

FAAB stands for Free Agent Budget (some leagues just say FAB). Instead of a turn-order priority list, every team gets an imaginary season-long budget and places a private dollar bid to add an available player from the waiver wire. The highest bid wins, and that amount is subtracted from the winning team’s budget for the rest of the season.

Turn a weekly waiver decision into a math lesson.

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