To budget on commission income, plan your month around a floor: your base pay (if you have one) plus your lowest recent month of commissions, not your average. Pay rent and bills from that floor, log each commission when it actually lands, and give anything above the floor a job: taxes first if nothing was withheld, then a buffer, then savings or debt.
That's the method. Below is how to find your floor, a worked example, what to do with a big check, and the tax rules that catch commission earners off guard.
Why is commission income so hard to budget?
Because the part you control is effort, not timing. A deal can close this week or slip to next quarter, and the paycheck moves with it.
How big the swings are depends on your pay plan:
- Salary plus commission. According to the Bureau of Labor Statistics, most employers of wholesale and manufacturing sales reps "use a combination of salary and commissions or salary plus bonuses," and commissions "usually are based on a percentage of sales."
- Mostly or all commission. Real estate is the classic case. The BLS says brokers and agents earn most of their income from commissions, that earnings "may be irregular, especially for beginners," and that agents "sometimes go weeks or months without a sale."
- A draw against commission. Some pay plans combine a draw with commissions (the Department of Labor mentions employees paid by "draws and commissions"). If that's you, ask in writing whether the draw has to be paid back out of future commissions and whether you'd owe anything if you left, because the answer changes what you can safely spend.
A normal budget assumes the same check every month. Yours needs to start from the amount you can count on.
Step 1: Pull your last 6 to 12 months of pay
Gather your pay stubs or commission statements and write down, month by month, what actually hit your account after taxes. Split it into two columns: base pay and commissions. Use the month the money arrived, not the month the deal closed.
If you're new and don't have that history yet, be honest with yourself: your floor may be just your base pay, or zero if you're fully on commission. That's a reason to start with a cash cushion, not a reason to budget on hope.
Step 2: Find your floor (worked example)
Here's a made-up example. Say your base salary takes home $2,700 a month, and your commissions after taxes over the last six months were:
| Month | Base (take-home) | Commission (take-home) | Total |
|---|---|---|---|
| April | $2,700 | $1,100 | $3,800 |
| May | $2,700 | $2,600 | $5,300 |
| June | $2,700 | $450 | $3,150 |
| July | $2,700 | $1,800 | $4,500 |
| August | $2,700 | $3,200 | $5,900 |
| September | $2,700 | $950 | $3,650 |
Your average commission month is about $1,683, which makes an average month look like $4,383. But your floor is June: $3,150. That's the number to build the budget on.
If you'd budgeted on the average, a month like June would leave you about $1,233 short. That's the whole problem with commission pay in one line. This is the same lowest-month idea we use for any variable income, and it works the same way for tip income.
Step 3: Cover fixed bills from the floor only
Rent or mortgage, utilities, insurance, phone, the car payment, minimum debt payments and groceries all come out of the floor. If they don't fit inside $3,150 (or whatever your floor is), that's the real thing to fix, because no amount of good quarters makes a budget work when an ordinary slow month can't pay the bills.
Then give the flexible spending (eating out, gas, fun money) limits that fit what's left of the floor.
Step 4: Give every commission a job before you spend it
When a big check comes in, the risk is that it feels like a raise. It isn't extra money until your slow months are covered. Decide the order once, ahead of time:
- Taxes, if none were withheld. More on this below.
- A buffer. Money set aside so the next slow month still pays the bills. Our emergency fund guide covers how to size one.
- Known costs that aren't monthly. License renewals, dues, car registration.
- Savings or extra debt payments. Once the first three are handled.
How are commissions taxed?
It depends on whether you're an employee or self-employed, and this is where commission earners get surprised.
If you're an employee, your employer withholds taxes from your commissions, but sometimes at a different rate than your regular pay. The IRS treats commissions as supplemental wages: Publication 15 says supplemental wages include "bonuses, commissions, overtime pay" and more. When those are paid separately from regular pay (or the amounts are listed separately), and your employer already withholds income tax from your regular pay (or did last year), it can choose to withhold a flat 22% for federal income tax. If it uses that flat rate, a $4,000 commission check would have $880 of federal income tax withheld. Above $1 million of supplemental wages in a calendar year, the rate is 37%.
That flat rate is just withholding. Your actual tax for the year can come out higher or lower, so don't treat the take-home on a commission check as the final word.
If you're self-employed, plan to pay the tax yourself. The IRS says licensed real estate agents are treated as self-employed for all federal tax purposes when substantially all of their pay is tied to sales rather than hours worked and they have a written contract saying they won't be treated as employees. In that case:
- You generally have to make estimated tax payments if you expect to owe $1,000 or more when you file, and estimated tax covers self-employment tax as well as income tax.
- The self-employment tax rate is 15.3%: 12.4% for Social Security and 2.9% for Medicare.
For budgeting, the simple rule is to move a set share of every self-employed commission into savings for taxes the day it lands, and only count the rest as spendable. A tax preparer can help you pick the right share for your situation.
Should you budget on base pay alone?
If you have a base salary and it covers your fixed bills, that's the safest version of this plan: every commission becomes buffer, savings or planned spending. If your base doesn't cover the bills, use the lowest-month floor from step 2 instead and build the buffer first. Either way, review the numbers every few months. A floor from last year can be too high or too low once your territory, product or market changes.
How to do this in SimplifyPocket
SimplifyPocket doesn't connect to your bank. You add your income and spending yourself, which suits pay that changes every month.
- Schedule your base pay. Add your salary as scheduled income for the usual take-home amount, repeating however you're paid. It adds itself on payday.
- Log each commission as income when it lands. Tap the mic and say something like "eighteen hundred dollars commission," or type it in. Add a note like "Q3 accounts" so you can see later which deals paid when.
- Set category budgets on the floor. Groceries, eating out, gas and fun money get limits that fit your floor, not your best month.
- Watch Left to spend. It's your income this cycle (what's arrived plus scheduled pay still to come) minus what you've spent and the scheduled bills still due. A slow month shows up early, while there's still time to adjust.
- Match the cycle to your pay. Keep the calendar month or pick your own start day. More on that in budgeting by pay period.
See everything the app does on the features page.
Try it free
SimplifyPocket is on iPhone and Android. Schedule your base pay once, say each commission when it lands, and you'll know what a slow month can cover. No bank login needed. Try it free for 3 days, then $2.99/month or $14.99/year.