Round income down, bills up
So now you've got your real numbers in front of you — not the guessed-at ones, the actual figures off the actual statements. Good. That was the hard part, truly; most people quit right there, because looking straight 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 through. We're going to make your numbers less accurate on purpose.
Let me show you what I mean. When you write down what you expect to bring in this month, round it down. If your paycheck usually comes to $2,340, write $2,300. If Rodney's shop check swings between $400 and $600 depending on what sold, I don't write $500 — I write $400. The low end. Always the low end.
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 might be 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, not less. And if I'm wrong about a bill, it's the same story: it comes in under what I budgeted, and there's a little breathing room instead of a hole. No one has ever gotten themselves into trouble by overestimating what the power company was going to charge. I promise you that.
The other way around is exactly how people get surprised. They round the 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 anyway, so why not — and then two things land in the same week. The paycheck's a little short because of a scheduling thing, and the water bill's higher because somebody left a hose running up by the garden. Now you're short in both directions at once. That's the trap. Rounding income down and bills up means you dismantled the trap inside your own plan before it ever had a chance to spring.
How to actually do this at home
Get your notebook out — I know I keep saying notebook and not spreadsheet, and I'll keep saying it, 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 it is. 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 never does.
- 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've 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, and savings if there's room. It's probably smaller than the number you were picturing in your head. That's normal. It's also the accurate one.
Let me tell you where this habit actually came from for me, in case it helps. I've been testing recipes for years, writing my adjustments in a notebook — the same kind of notebook I use for budgeting — and one day it struck 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. A budget is that too. You don't get it right on the first pass. 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, after I got burned the other way one too many times — and I never went back.
This is also where I'll say my opinion out loud, 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 with no place to go, don't let it evaporate into eating out or a random Costco run. 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 ever 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.