“I’m a W-2 employee with an S-Corp and an LLC. My accountant told me to deduct nothing, and I’m getting slaughtered. Salary around $205K. Is it dangerous to deduct? Can I do anything?”
W-2 withholding stops working the moment your income gets complicated. A $205,000 W-2 earner with an S-Corp and an LLC on the side told us he gets slaughtered every April — his accountant said to deduct nothing and withhold everything, and it still isn’t working.
Quick answer: Project your full year now: last pay stub, expected bonuses and business income. Then either increase your W-2 withholding (new W-4) or make a Q4 estimated payment, and shrink taxable wages with retirement contributions and fringe benefits. The system is pay-as-you-go — aim close to zero, not a big bill in April.
The tax system is pay-as-you-go — for employees and business owners alike. If you own a profitable S-Corp, partnership, LLC or rentals, your return typically calculates estimated payments for the next year, because the IRS wants tax paid in the quarter you earn the income. Fall short and you can owe an underpayment penalty on top of the balance. Withholding is designed to land you close to zero: not a big bill, and not a big refund either. A useful guardrail: you generally avoid the penalty if withholding and estimates cover at least 90% of this year’s tax, or 100% of last year’s (110% if last year’s AGI was over $150,000).
The W-4 changed — the old “allowances” are gone, replaced with dollar amounts — and it was never built for complicated income. Add an S-Corp, an LLC, two bonuses this year and none next year, and last year’s pattern tells you nothing about this year’s tax. That’s why so many people end up angry about paying a big bill in a year when their income was actually lower: the timing never lined up.
With a few months left in the year, do the math on purpose:
No — legitimate deductions aren’t “dangerous.” But not every expense is deductible the way you record it, which likely explains why only $15,000–$20,000 of $30,000 in expenses showed up: meals are 50% deductible, entertainment is 0%, and for a vehicle you use either the mileage rate or actual expenses — not both. Some costs aren’t deductible at all. One category Laura likes: real assets the business actually needs, with strong depreciation — not a new car every year, but useful equipment that works and deducts.
Official IRS reference: IRS — Tax Withholding Estimator
Usually because withholding only reflects your job, while S-Corp, LLC, bonus or investment income adds tax that nothing is covering during the year.
Generally, have withholding and estimates cover at least 90% of this year’s tax or 100% of last year’s (110% if last year’s AGI exceeded $150,000).
Either works. Extra withholding is treated as paid evenly through the year, which can make it the better fix late in the year.
Some categories are limited: meals are 50% deductible, entertainment isn’t deductible, and you can’t claim both mileage and actual vehicle costs.
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Disclaimer: This article is for educational purposes only and is not tax, legal, or financial advice. Every situation is different — talk to a qualified professional about your specific facts before making any decisions.
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