1040-ES quarters from a 1099 set-aside, not a raise
The 1099 page splits annual tax by four. Due dates and safe harbor still live on the IRS form. Worked $80,000 cases.
Contractors treat the quarterly number like a bill from a vendor. It is not. Form 1040-ES is how the IRS wants estimated income tax and self-employment tax during the year so April is not a surprise. Takehome’s 1099 page prints annual tax, a set-aside percent of net, and that tax divided by four. The fourth number is a planning split. It is not a finished voucher, and it is not a raise when a quarter lands in a fat invoice month.
Two $80,000 nets
Single filer, 2026 table, net profit after expenses $80,000. Texas: self-employment tax $11,303.64, federal $7,526.60, state $0, total $18,830.24, leftover $61,169.76, set-aside 23.5% of net, equal quarter $4,707.56. California: same SE tax and federal, state planning $5,417.08, total $24,247.32, leftover $55,752.68, set-aside 30.3%, equal quarter $6,061.83. Type 80000, single, TX then CA on the 1099 page to match.
Thirty percent as a slogan is almost the California case and too much cash idle in the Texas case. That is the only reason this site prints a percent. High-tax states can need more than 30% once you are in a fatter bracket. Do not copy a forum number.
Due dates are not even
IRS estimated-tax due dates for most people are around April 15, June 15, September 15, and January 15 of the following year. Those gaps are not equal. April to June is about two months. September to January is about four. The IRS still wants four roughly equal payments for the safe-harbor story, not four payments scaled to invoice volume. A slow summer does not shrink the September voucher unless your annual tax really shrank.
Our page ignores the calendar. It prints total tax ÷ 4. If your profit is lumpy, you still owe based on the year. Parking 23.5% of every Texas deposit in a tax account is usually easier than waiting for four due dates and then finding $4,707.56 four times. The percent is the habit. The quarter is the checkpoint.
Safe harbor is a different number
Safe harbor is 90% of this year’s tax or 100% of last year’s tax (110% if last year’s AGI was high). Those tests live on the form and in Publication 505. This calculator does not know last year’s return. If last year you had a W-2 with fat withholding, you might already be covered and still see a large quarterly here. Ask a CPA before you copy our $4,707.56 onto a voucher. Underpaying on purpose because “the page said leftover” is how penalties show up.
We do not apply QBI, a solo 401(k), health insurance, or a home office. Those cut the income-tax slice. Our set-aside is a ceiling if you have them, a floor if you also have a city tax or a late filing. Below $400 net we charge no SE tax. Mix a day-job W-2 with a side 1099? Run both tools. W-2 withholding might cover the job and leave the side profit naked.
Official pages: IRS Form 1040-ES and the self-employment tax topic. Then run net, status, and state on the 1099 take-home calculator. If you also have a salary, open the paycheck calculator and keep the stacks separate until you know which dollars already left a stub.
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