[gruez]

>This has saved me numerous times because of absentmindedness.

Aren't you costing yourself tens of dollars per year in lost interest by doing this? You're essentially giving them an interest free loan. A calendar/reminder app doesn't have this problem and is more reliable (on the off chance you forgot twice in a row, for instance).

[_jal]

I used to do this until I became competent with that sort of thing.

If you're the sort of person for whom this is a bandaid, a calendar won't fix it, and you're also not the sort of person who cares about $15/year. Hell, I haven't missed a bill in well over a decade, and I don't care about $15/year.

[refurb]

I think you might be overestimating what the opportunity cost is. A $100 loan to a utility at today's interest rate (say a high-interest savings account) is probably $1-2 per year.

[xwdv]

Only worry about lost interest after you have maxed out all your investment and are holding no cash. Once you run out of cash to invest, then you can tap into these reserves. Most people though keep cash on hand anyway, accruing no interest.

[z3t4]

Also, you might want to use the shelf space for something else. And the apartment may have a high cost per square meter so it would cost thousands in storage space.