How to Share House Expenses With a Roommate 

With rents soaring, learning how to share house expenses with a roommate will save you personal and legal headaches down the road.

Two can live as cheaply as one, so the popular adage goes. While this may not be mathematically accurate, sharing expenses can lead to economies of scale that can save two or more people money.

budget 60K a year

Write everything down before you start sharing expenses to avoid misunderstandings

An obvious example would be sharing the monthly rental fee on a washer/dryer set in an apartment, or a small refrigerator in a college dorm. Determining expenses you can share, agreeing on percentages each roommate will pay, defining how and when you’ll make payments and putting everything in writing can help roommates reduce living expenses.

Write a List of Expenses for Roommates

Write a list of expenses you and your roommate believe you can share. Check out these typical household expenses at Quicken’s website. Divide the list into fixed and variable expenses. Fixed expenses would include rent, cable and furniture rental. Variable expenses would include items such as groceries, phone bill, utilities, cleaning supplies and Internet service.

My Fire Facts has an Excel spreadsheet you can download to create a budget. Don’t plan on finishing in one shot — leave the list on a table for a few days and update it as more expenses come to mind.

Decide on the Roommate Expenses Split

Figuring out how to share house expenses with a roommate will be easier if you decide on what percentage of each expense each roommate will share. For example, if one roommate watches premium TV channels every night while the other would be happy watching basic cable two or three nights per week, you may not want to split the cable bill 50/50.

If one bedroom is more desirable than another because of square footage, closet space, private bathroom or other reason, roommates can “bid” on this room by agreeing to pay a higher percentage of the rent to occupy it.

Set Up Payment Procedures

Discuss how and when each person will pay the expenses. For example, Bob may write the checks for all of the individual bills each month, with Hank writing him one check each month to cover his half of the bills.

Hank may pre-pay an entire month’s bills at the beginning of the month, with an adjustment due after all fixed and variable expenses are paid. Hank might pay at the end of the month after all bills are presented, or he could make two payments during the month. Roommates can alternate paying the bills each month, or just write two checks for each bill as they come due.

Put Roommate Agreements in Writing

Write a contract delineating the terms of your agreement. Include who pays what, in what form each person will pay, such as cash, check or credit card, and the date on which payments are due. Creating a roommate “pre-nup” helps avoid miscommunication and strengthens your legal case in the event of a dispute.

Sign, date and witness or notarize your contract. Give each person a copy of an original copy of the contract with a signature and notarized, if possible.

Review your expenses each month to determine if your expense-sharing plan needs adjustment. Make initialed, dated changes to your contract, if necessary.