Round income down, bills up
Okay, so now you've got your real numbers in front of you. Not the guessed-at ones, the actual ones off the actual statements. Good. That was the hard part, honestly, most people quit right there because looking at it is uncomfortable. You didn't quit. Put that in the plus column.
Now we're going to do something that feels a little strange the first time. We're going to make your numbers less accurate on purpose.
Here's what I mean. When you write down what you expect to make this month, round it down. If your paycheck usually comes to $2,340, write $2,300. If Rodney's shop check varies month to month between $400 and $600 depending on what sold, I don't write $500, I write $400. The low end. Always the low end.
And bills, you do the opposite. Round up. If the power bill's usually $78, I write $85. If the water bill's $52, I write $60.
Why on earth would I do that to myself, you're wondering. Because if I'm wrong about the income number, I'm wrong in a direction that doesn't hurt me. I end up with more than I planned for instead of less. And if I'm wrong about a bill, same thing, it comes in lower than I budgeted and there's a little breathing room instead of a hole. Nobody has ever gotten themselves in trouble by overestimating what the power company was going to charge them. I promise you that.
The other way around is how people get surprised. They round their paycheck up because it feels nice to write the bigger number, and they round the bills down because the bill's usually pretty close to that and why not, and then two things happen the same week — the paycheck's a little short because of a schedule thing, and the water bill's higher because somebody left a hose running up by the garden — and now you're short in both directions at once. That's the trap. Rounding down on income and up on bills means you built the trap out of your own plan before it could happen to you.
How to actually do this at home
Get your notebook out — I know I keep saying notebook and not spreadsheet, and I'll say it again, because a notebook you write in beats a perfect spreadsheet that gets abandoned by March.
- List every source of income for the month. Paycheck, side work, whatever. For anything that varies, look back three months if you can and use the lowest one, not the average. The average lies to you a little. The lowest one doesn't.
- List every bill you know is coming. Rent or mortgage, power, water, gas, phone, insurance, all of it.
- For fixed bills that don't change — like rent — write the actual number. No rounding needed there, it is what it is.
- For bills that vary — power, water, gas — round up to the nearest five or ten. Not wildly up. Just enough that if it comes in high, you already planned for it.
- Add it all up and look at the gap between income and bills. That gap is what you've got left for groceries, gas in the car, the fun stuff, savings if there's room. That number is smaller than the one you were picturing in your head, probably. That's normal. That's the accurate one.
I'll tell you where this habit actually came from for me, if it's useful. I've been testing recipes for years, writing my adjustments in a notebook, same kind of notebook I use for budgeting, and one day it hit me that the two stacks on my shelf were in the exact same handwriting doing the exact same job. When a recipe doesn't come out right, I don't throw it out, I write down what I'd change and I run it again next month at 4,600 feet where everything bakes different than it does at sea level anyway. That's what a budget is too. You don't get it right the first time. You adjust the number, you write down why, and you run it again. Rounding income down and bills up is just one of the adjustments I made a long time ago because I got burned the other way around one too many times, and I never went back.
This is also where I'll say my opinion plainly, since you're going to hear it from me more than once this course: spreadsheets are overrated for regular people. They break, somebody bumps a formula, and then the whole thing sits unopened for six months. A notebook doesn't do that to you. It just sits there being honest.
One caution, and it's a real one, not a formality: if you round bills up and it turns out you consistently have thirty or forty extra dollars sitting there every month that you didn't plan a place for, don't just let it evaporate into eating out or random Costco runs. Give it a job. Even if the job is just "sits in savings," give it one. Extra money without a job is exactly how the fry sauce money disappears without you noticing.
Before next time
Take the numbers you gathered last lesson and run them through this rounding — income down, bills up — and see what the real gap looks like. Bring it with you. We're going to build the actual categories around that number next.