Sharing a car with friends: who pays for what

Buying one car between three people costs less than three cars. But nobody drives it the same amount, the insurance lands on one person’s card, and two years later someone moves away. To make it last, separate three things from day one: what each person owns, what the car costs every year, and what each person uses when they drive.

Agree on shares before you buy

Ownership follows the money put into the purchase, not the name of whoever paid the seller. If three friends each fund a third, each owns a third, even if one person fronted the full price. Write it on one dated page that everyone signs: price, each contribution, each ownership share.

The title may not say the same thing. Rules depend on where the car is registered. In California, for example, any change in ownership must be reported to the DMV within 10 days and the title updated. Also check with the insurer that every regular driver is covered: terms vary from one policy to another.

www.dmv.ca.gov

A worked example: three friends, one car

This example is fictional. Nora, Malik and Theo buy a used car for $6,000. Nora fronts the full amount; the three own the car in equal shares, $2,000 each. In the first year, Malik pays the insurance, $720, and Theo pays maintenance and inspection, $330. Each person pays for the fuel they use.

Fixed costs for the year come to 720 + 330 = $1,050. Split equally, that is $350 per person. Each share for the year is therefore 2,000 + 350 = $2,350.

• Nora paid $6,000 for a $2,350 share: she is owed $3,650.
• Malik paid $720: he owes $1,630.
• Theo paid $330: he owes $2,020.

Check: 1,630 + 2,020 = $3,650. Malik pays Nora $1,630 and Theo pays her $2,020, and each of them has paid $2,350.

When one person drives far more

Fuel naturally follows the driver: whoever drives fills the tank, or returns the car at the same level. Tolls and tickets follow whoever was driving too. For a trip taken together, the fuel split between passengers works the same as for any shared ride.

Fixed costs raise a real question. In the example, Nora drives 6,000 miles in the year, Malik 3,000 and Theo 1,000, for 10,000 miles in total. If the group splits insurance and maintenance by distance, the $1,050 becomes $630 for Nora, $315 for Malik and $105 for Theo.

• Nora: 2,000 + 630 = $2,630; she paid $6,000, so she is owed $3,370.
• Malik: 2,000 + 315 = $2,315; he paid $720, so he owes $1,595.
• Theo: 2,000 + 105 = $2,105; he paid $330, so he owes $1,775.

Check: 1,595 + 1,775 = $3,370. Neither rule is right in principle. An equal split pays for having the car available; a split by distance pays for using it. Pick one before the first bill, read the odometer on a fixed date and keep the same rule all year.

Plan for the accident and the big repair

A deductible after an accident or a new clutch can cost more than a year of running costs. Decide in advance: does the driver at the time pay the deductible, or is it shared? A major repair that extends the car’s life is usually split by ownership share, since it protects everyone’s value.

When one of the three leaves

Two years later, Theo moves away. The group values the car at $4,500 by comparing listings for similar models. Theo’s share is a third, $1,500. Nora and Malik buy it out equally and pay him $750 each; they then own half the car each.

Settle running costs up to the departure date first, then handle the buyout as a separate line. Mixing the two makes the numbers hard to read. If nobody wants to buy, sell the car and split the price by ownership share. Remember to update the title and the insurance policy too.

The same reasoning works for furniture in a shared flat: see how to buy out a roommate who leaves.

Keeping the car’s accounts

In Spliz, the group can record the purchase, insurance and maintenance, see each person’s share and the balances, then record repayments made by bank transfer, in cash or with another app. Recording a repayment does not move money: the app keeps the accounts, and payments happen elsewhere.

Spliz

Sources

• California DMV, Title Transfers and Changes
• Spliz