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The Supasplit Blog

Practical, honest guides on splitting bills with roommates, friends, partners, and travel groups. Written for humans, not algorithms.

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Retro comic book cover illustration of a steamy bathroom with a long shower running, roommates outside the door with timers, bold colors and halftone textures
Roommates

The Water Bill Split: Showers, Laundry, and the One Who Lives in the Tub

Water bills are usually small and uneven. Here's how to split water between roommates, when to track, and when to just absorb it.

5 min read
Retro comic book cover illustration of roommates arguing under a glowing lightbulb with a thermostat and electric meter, bold colors and halftone textures
Roommates

The Electricity Bill Roommate Split: AC, Heat, and Phantom Loads

Electric bills swing wildly across seasons. Here's how to divide electricity between roommates fairly, whether you split equally, by room, or by hours at home.

5 min read
Retro comic book cover illustration of three roommates standing around a glowing Xfinity bill with cable cords and a router, bold colors and halftone textures
Roommates

How to Split the Xfinity Bill With Roommates (Internet, Cable, Mobile)

Xfinity bundles internet, cable, and sometimes mobile lines into one bill. Here's how to split it fairly when not everyone uses every part.

5 min read
Retro comic book cover illustration of two friends passing an envelope of cash with a handshake, with bold colors and halftone textures
Friends & Dining

Lending Money to a Friend: The Rules That Save Friendships

A friend asks to borrow $500. Or $2,000. Here are the rules that let you lend to friends without blowing up the friendship, and how to know when to say no.

6 min read
Retro comic book cover illustration of a couple at a table with laptops and coffee doing an annual review with bold colors and halftone textures
Couples & Family

The Annual Money Check-In Every Couple Should Actually Do

A step-by-step annual money check-in for couples. What to review, what to adjust, and how to make it feel like 30 minutes, not a trial.

6 min read
Retro comic book cover illustration of friends on vacation tracking shared expenses in real time on a phone, with bold colors and halftone textures
Group Travel

Tracking Expenses Live During a Week-Long Vacation (So Nobody Ghosts)

A week of shared spending, tracked live, settled in minutes. The system for logging group travel expenses as they happen without slowing down the vacation.

6 min read
Retro comic book cover illustration of a couple with keys standing by a shared car with bold colors and halftone textures
Couples & Family

Sharing a Car With Your Partner: Insurance, Gas, Repairs

The complete guide to sharing a car as a couple. Who pays for insurance, gas, repairs, and what happens to the car if you split up.

6 min read
Retro comic book cover illustration of a $20 bill hovering over a decision fork between two friends, with bold colors and halftone textures
Friends & Dining

Friend Owes You $20, Let It Go or Chase It? A Decision Tree

A practical decision tree for when a friend owes you a small amount. When to let it go, when to send the request, and when to say something.

6 min read
Retro comic book cover illustration of a multi-generational family outside a beach rental house with bold colors and halftone textures
Couples & Family

Family Vacation Finances: Parents, Adult Kids, and In-Laws

Splitting family vacation costs across parents, adult kids, siblings, and in-laws. A playbook for the beach house, the road trip, and the big reunion.

6 min read

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