15 How do you calculate how much to pay for estimated taxes? Is there some formula or percentage I should be setting aside from each payment I receive?

10 The safe harbor method is to pay either 90% of your current year's tax liability or 100% of last year's tax liability (110% if your income is above $150,000), whichever is lower. For a quick practical approach, I set aside about 30% of all my 1099 income - roughly 15% for self-employment tax and 15% for income tax. This has worked well for me, but your tax bracket might differ. The IRS has Form 1040-ES with a worksheet to calculate more precisely, or you can use tax software that offers quarterly tax calculators.

4 Does that apply even if you're just a freelancer/contractor working for one company? I thought B&O tax was just for actual businesses with multiple clients.

I had no idea this was even a thing! Do you know if there's a specific form I need to fill out to request this? And does it matter if I've already set up a payment plan?

You don't need a specific form - you can request it by phone when you call the IRS. Just specifically ask for "first-time penalty abatement" and explain that you've had a good compliance history. They'll check if you qualify right on the call. It doesn't matter if you've already set up a payment plan - you can still request the abatement. The payment plan is for the total amount, but if they approve your abatement request, they'll reduce the total and adjust your payments accordingly. Be aware this only removes penalties, not interest or the actual tax owed, but it can still save you a decent amount.

Do you just use the calculator on the IRS website? I've tried that before and found it super confusing with all the questions about dependents and deductions.

This is actually really helpful, thanks! For the health insurance, does that include vision/dental premiums too? And does it matter that my wife is on my plan as well? I'm guessing I'd need to keep good documentation for the business travel with partial vacation - any tips on best practices there?

Yes, vision and dental premiums are included along with regular health insurance. If your wife is on the plan, her premiums are also deductible as long as she's your spouse (or a dependent) - this is one of the best benefits of S-Corp ownership! For business travel with personal elements, the key is having the primary purpose be business. Document all business activities during the trip (meetings, conferences, client visits) with dates and times. Keep all receipts separately categorized as business vs. personal. Transportation to the destination is fully deductible if the primary purpose is business, but meals and lodging are only deductible for the business days. For example, if you have a 5-day trip with 3 business days and 2 personal days, your flight is 100% deductible but only 3/5 of lodging would be deductible.

Oof that's rough. How did they even determine the home office was exclusively for business? Did they come to your house? I've always been worried about claiming that deduction.

They didn't physically visit my home, but they required photos of the space from multiple angles, a floor plan with measurements, and a written explanation of how the space is used. They also asked for utility bills and verification that no personal activities happened in that space. What tripped many people up is the "exclusive use" requirement. If you have a desk in your living room or a guest bedroom that sometimes serves as an office, it won't qualify. The space must be used exclusively for business. I have a dedicated room that's only my office - no TV, no guest bed, nothing personal - which is why that deduction was allowed.

You're a genius! I just went back and found I had the exact same issue. There was a checkbox in the Personal Info section about being claimed as a dependent that somehow got set to "Yes" even though I definitely can't be claimed by anyone. As soon as I fixed that one setting, my refund jumped from owing $372 to getting back $570, exactly what my calculations showed. It's crazy how one checkbox could completely throw off the standard deduction calculation. Has TaxAct always been this finicky? I've used them for years but never ran into this problem before.

TaxAct definitely changed their interface this year, and I think they're having some issues with it. In previous years, that dependent question was much more prominently displayed and clearly explained. This year it's buried in a series of personal information screens that are easy to click through without carefully reading. I've heard similar stories from several people using TaxAct this year. The good news is once you find and fix that setting, the calculations should be completely accurate. Always a good idea to double-check your final 1040 form before filing to make sure the standard deduction amount ($13,850 for single filers in 2024) appears correctly on the form.

Thanks for this! I just checked my Form 1040 preview and line 12 was showing only $500 instead of $13,850. After fixing the dependent checkbox issue others mentioned, it now shows the full $13,850. Checking the actual tax forms is definitely going to be my new practice before submitting anything. Would've caught this issue immediately if I'd done that first!

Thanks for bringing this up! I double-checked everything and my overall tax situation is pretty much identical to last year. Same filing status (single), same standard deduction, no dependents, no additional income sources, and my 401k contribution percentage is the same. The only significant change was switching employers, which is why the withholding issue makes the most sense. After reading everyone's comments, I'm going to submit a new W-4 with additional withholding in line 4c. Hopefully that'll fix things for next year's return!

Good thinking to check all those factors! Since everything else remained consistent, it definitely sounds like the withholding change from your new employer is the culprit. Using line 4c for additional withholding is exactly the right approach. Just be careful not to overwithhold too much - remember that a smaller refund means you had more money in your paychecks throughout the year. Some financial advisors actually recommend aiming for a small refund since it means you're not giving the government an interest-free loan. But I understand many people prefer the forced savings of a larger refund!

If both you and your spouse work, the Step 2 checkbox is actually designed specifically for your situation. It adjusts your withholding to account for the higher tax bracket you might be in when combining both incomes. The downside is that it might overwithhold a bit. If you want more precise control, you could use the IRS withholding calculator online to get an exact dollar amount for Step 4c instead. That's what I did, and it worked out perfectly - we got a small refund instead of owing like we did the previous year.