Splitting Utilities When One of You Works From Home
#cohabitation#group
When one person is home all day, the electricity bill isn't shared equally in any real sense. You still can't measure it per room. Three ways to divide utilities without measuring, plus how to handle seasonal swings.
Two people in the same home don’t use electricity the same way. If one works from home five days a week and the other commutes every day, the daytime air conditioning, lights and laptop are almost entirely one person’s consumption.
Most households still split it evenly, because there’s no way to do otherwise. Rooms don’t have their own meters, and there’s no method for measuring who used what.
What do you do with something you can’t measure
Since accuracy is off the table, what you’re aiming for is agreement.
There are only so many ways to build that. Pick one defensible number and stick to it. If the reasoning can be explained, being somewhat off doesn’t generate resentment. An amount picked because it felt “about right” generates resentment every single month.
Three approaches that people actually use are below. None of them measure anything. They’re ways of reaching agreement without measuring.
Option 1: Build a ratio from days at home
The most intuitive method is to build a ratio out of hours spent at home.
Say one person works from home five days a week and the other commutes five days a week. On weekday daytimes, that’s five days at home versus zero. But both are home in the evenings and on weekends, so the daytime block is the only place a gap appears.
Divide the week into “five weekday daytime blocks” and “nine other blocks”, and the home worker is present for 14 blocks against the commuter’s 9. That’s a 14:9 ratio, roughly 61:39.
| Blocks at home | Share | On a $180 bill | |
|---|---|---|---|
| Works from home | 14 | ~61% | $109.80 |
| Commutes | 9 | ~39% | $70.20 |
The block count doesn’t need to be exact. 60/40 or 70/30 is a fine level of precision. What matters is that both of you can explain where the number came from.
Option 2: Split the standing charge evenly, tilt only the usage
Electricity and gas bills separate into a standing charge and a usage charge.
The standing charge applies whether you use anything or not. As long as the account exists, everyone living there owes it equally. There’s no case for tilting it.
Usage charges scale with consumption. That’s the part to tilt.
On a $180 bill with a $40 standing charge, split that $40 evenly at $20 each. Divide the remaining $140 at 60/40 for $84 and $56. The totals come to $104 and $76, a narrower gap than the $109.80 and $70.20 from option 1.
Your bill states the standing charge, so the split is easy to do. The advantage of this method is that the gap shrinks automatically in months when usage is low.
Option 3: Add a flat amount
If the ratio arithmetic itself feels like too much, you can fix the number instead.
Split the bill evenly, and the person working from home adds a flat $30 a month. Decide the amount together at the start and leave it alone for a while.
The upside is that there’s no monthly calculation. The bill can change and the top-up doesn’t. The weakness is that it doesn’t track reality when the gap widens in summer and winter.
Don’t set the flat amount and forget it. Revisit it once or twice a year. Starting with the expectation of revisiting also means the first number doesn’t have to be perfect.
Build in the seasonal swing
The gap shows up in money most sharply in midsummer and midwinter.
A month with eight hours of daytime air conditioning versus a mild spring month can differ by nearly double on the bill itself. If you’re splitting by ratio, that difference is already reflected: on a $180 month versus a $90 month, the same 60/40 tilt produces half the gap in dollars.
Flat top-ups don’t track the seasons. You could raise the top-up for summer only, but at that point switching to a ratio is less work.
Revisit the split when the working pattern changes. Office days shift, someone changes jobs, remote work ends. Rebuilding the ratio at those moments keeps it tied to reality.
In Evere, set the percentages with ratio split and one entry per bill distributes the amount. Change the percentages in the month you want them changed, and past records are unaffected. For household costs more broadly, splitting living expenses when you move in together covers the rest.
❓ FAQ
Q. Can’t we just read the smart meter data? You can see whole-home usage by time of day, but it isn’t broken out by room. Attributing daytime usage to a person is still an inference. That said, if you can see the daytime-versus-evening ratio, that’s a better-grounded number than counting blocks. Worth using when the data is available.
Q. Shouldn’t the employer cover work-from-home electricity? Some employers pay a remote work stipend, but whether it exists and how much it is varies by company. If you’re receiving one, putting it toward the utility top-up is the logical use. If you aren’t, the split has to happen within the household.
Q. It feels awkward to be the one asking for a tilt. Raising it as a question about the system rather than the money takes the edge off. “Our working pattern changed, so I’d like to revisit how we split utilities” doesn’t put the other person on the defensive. And it’s accurate: what changed is the working pattern, not them.