How do you split bills by income?

Each partner pays the same share of the bills as their share of take-home pay. Example with hypothetical numbers: Partner A takes home $6,000 a month and Partner B $4,000, so A brings in 60%. On $3,000 of shared bills, A pays $1,800 and B pays $1,200.

What is the difference between 50/50 and splitting bills by income?

With 50/50, each person pays the same dollar amount. With an income-based split, each person pays the same percentage of their own pay, so the higher earner covers more of the bills.

What does equal leftover mean?

Equal leftover splits the bills so both of you keep the same amount after they're paid. You add both incomes, take out the shared bills, and divide what's left in half. If the income gap is bigger than the bills, the lower earner's share stops at $0.

Should we use gross pay or take-home pay?

Many couples use take-home pay because it's the money that's actually available each month. Whichever you pick, use the same one for both people.

Which split is the fairest?

Each one is fair by a different definition: same dollars, same percentage, or same amount left over. The calculator shows all three so you can talk through them together. This is education, not financial or legal advice.

Split Bills by Income Calculator: 50/50 or Fair Share?

Split bills by income

Income-based split

$1,800 / $1,200

Partner A pays 60%

Partner A take-home pay (monthly)

Partner B take-home pay (monthly)

Shared bills each month

Income-based split (fair share)

$1,800 / $1,200

Partner A brings home 60% of your combined pay and Partner B brings home 40%, so each covers that share of the bills. The table below puts this next to a 50/50 split and an equal leftover split.

Partner A pays (income-based)$1,800 (60%)
Partner B pays (income-based)$1,200 (40%)

Shared bills$3,000

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Three ways to split the same bills

$3,000 of shared bills a month, split three different ways.

What each partner pays and keeps under each split
Method	A pays	B pays	A keeps	B keeps
50/50	$1,500	$1,500	$4,500	$2,500
Income-based	$1,800	$1,200	$4,200	$2,800
Equal leftover	$2,500	$500	$3,500	$3,500

How each method works

50/50: Each of you pays half, $1,500. It's simple, and it works best when your incomes are close. When they're not, the lower earner gives up a bigger share of their pay: here that's 25% of Partner A's pay and 38% of Partner B's.
Income-based (fair share): Each of you pays the same percentage of your own pay. Partner A's share of the bills is their pay divided by your combined pay. Here that's 60%, so Partner A pays $1,800 and Partner B pays $1,200.
Equal leftover: Add both incomes, take out the bills, and split what's left in half. The higher earner covers more of the bills so you both end the month with the same amount. Here you'd each keep $3,500.

The gap in what you each keep

How far apart your leftover money ends up under each split.

50/50: $2,000; Same dollars in
Income-based: $1,400; Same percentage in
Equal leftover: $0; Same amount left

When a Spender and a Saver share bills

The split is often the easy part. The 4 Money Types are Spender, Saver, Scrambler, and Strategist, and a Spender and a Saver usually disagree less about the bills than about what happens to the money each of you keeps. A Saver may want more of it set aside, and a Spender may want room to spend without explaining every purchase. Agreeing on a split, then giving each of you money that's yours to use, keeps the bills from turning into that bigger argument.

See how the two types handle money differently in Spender vs Saver, or find out which types you each are before you talk numbers.

Take the Money Type Quiz Together

Your next step

Same numbers, different first step

Two people can get this exact result and need totally different first steps. Your Money Type tells you which one is yours.

Find my Money TypeFree, about 2 minutes

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How It Works

01
Enter each partner's monthly take-home pay.
02
Add the total of the bills you share each month.
03
Compare 50/50, income-based, and equal leftover splits, and see what each of you keeps after bills.

The 4 Money Types

The Math Is the Same. Your First Step Isn't.

Spenders, Savers, Scramblers, and Strategists each need a different first fix. The free quiz tells you which type you are, so you know what to do with this number.

Find My Money Type

Common questions

: Each partner pays the same share of the bills as their share of take-home pay. Example with hypothetical numbers: Partner A takes home $6,000 a month and Partner B $4,000, so A brings in 60%. On $3,000 of shared bills, A pays $1,800 and B pays $1,200.
: With 50/50, each person pays the same dollar amount. With an income-based split, each person pays the same percentage of their own pay, so the higher earner covers more of the bills.
: Equal leftover splits the bills so both of you keep the same amount after they're paid. You add both incomes, take out the shared bills, and divide what's left in half. If the income gap is bigger than the bills, the lower earner's share stops at $0.
: Many couples use take-home pay because it's the money that's actually available each month. Whichever you pick, use the same one for both people.
: Each one is fair by a different definition: same dollars, same percentage, or same amount left over. The calculator shows all three so you can talk through them together. This is education, not financial or legal advice.

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Split Bills by Income Calculator