100 Tax Questions for Owners Earning $1 Million in Profit

How to use this guide

These are editorial questions for U.S. business owners, not a measured ranking of Google search volume. Each question links to a distinct article with the relevant decision, records and tax rules. Start with your entity, income and cash-flow facts; an assumed $1 million profit does not establish a deduction or a specific tax rate.

Tax bill and entity choice

1. How much tax does a business owner pay on $1 million in profit?
2. How can I lower taxes on $1 million of business income?
3. Should a business making $1 million in profit be an S corporation or C corporation?
4. What is the best tax structure for a business earning $1 million a year?
5. How much should I set aside for taxes if my S corporation earns $1 million?
6. Do I pay tax on S corporation profits I leave in the business?
7. Can I reinvest business profits instead of paying tax on them?
8. Would a C corporation lower my taxes if I keep most profits in the company?
9. When does converting an LLC to an S corporation stop saving taxes?
10. Can I own an S corporation and C corporation for different business activities?

S corporation pay and distributions

11. What is a reasonable salary for an S corporation owner making $1 million?
12. How much can I take as S corporation distributions after paying myself a salary?
13. Are S corporation distributions taxed twice?
14. Can I change my S corporation salary late in the year?
15. What happens if my S corporation paid distributions but no owner salary?
16. Does a higher S corporation salary increase my retirement contribution limit?
17. How do S corporation distributions affect my qualified business income deduction?
18. Can my S corporation reimburse expenses I paid personally?
19. Can I borrow money from my S corporation without creating taxable income?
20. What happens if I take more S corporation distributions than my stock basis?

QBI and deductions

21. Do I qualify for the QBI deduction if my business earns $1 million?
22. Why did my 20% QBI deduction disappear as my income increased?
23. How do W-2 wages affect the QBI deduction for a high-income business owner?
24. Can business equipment increase the QBI deduction when payroll is low?
25. Do consulting firms qualify for the QBI deduction at $1 million in profit?
26. Can a medical practice owner claim the QBI deduction at a high income?
27. Does adding employees increase my available QBI deduction?
28. How do multiple businesses calculate the QBI wage limit?
29. Can a rental property qualify for QBI alongside my operating business?
30. Should I increase my own S corporation salary to get a larger QBI deduction?

Estimated taxes and cash flow

31. What quarterly estimated taxes should I pay on $1 million of business profit?
32. Does the 110% prior-year tax safe harbor apply to business owners?
33. What if my business profit doubles after I calculate estimated taxes?
34. Can I avoid an estimated-tax penalty by increasing December payroll withholding?
35. Should I pay estimated taxes personally or through my S corporation?
36. Why do I owe taxes when my business has little cash in the bank?
37. How are owner draws different from deductible business expenses?
38. Can I spread a large business tax bill into an IRS payment plan?
39. What tax moves can I still make before December 31 at $1 million in profit?
40. What tax moves can I make after year-end but before filing?

Retirement and benefits

41. How much can a $1 million profit business owner put into a 401(k)?
42. Is a cash balance plan worth it for a business owner earning $1 million?
43. Can I combine a 401(k) and cash balance plan to reduce taxable income?
44. How does my S corporation salary limit employer retirement contributions?
45. Can I set up a retirement plan after the tax year ends?
46. What retirement plan works best when my business has 20 employees?
47. Can my company deduct health insurance for an S corporation owner?
48. Should my business offer a health reimbursement arrangement or group plan?
49. Can I hire my spouse and fund another retirement account through the business?
50. What happens to my retirement plan if I sell my company next year?

Equipment and depreciation

51. Should I buy equipment before year-end to reduce tax on $1 million in profit?
52. Does paying for equipment in December create a deduction before it is delivered?
53. What is the difference between Section 179 and bonus depreciation in 2026?
54. Can I deduct a business vehicle if I use it partly for personal driving?
55. Does leasing equipment create a better tax result than buying it?
56. Can I claim bonus depreciation on used equipment purchased from another business?
57. What happens to depreciation deductions when I sell the equipment?
58. Can I expense software development costs in 2026?
59. Should I buy a building through my operating company or a separate LLC?
60. Can I amend an old return to claim missed depreciation?

Real estate and cost segregation

61. Can a short-term rental loss offset $1 million of business income?
62. How many hours do I need to work on a short-term rental to use its losses?
63. Can cost segregation on a rental property reduce taxes from my S corporation?
64. Does cost segregation work for long-term rentals owned by business owners?
65. How much of a rental purchase price can a cost segregation study reclassify?
66. Can I do a cost segregation study on a property bought three years ago?
67. Do I need Form 3115 to catch up missed depreciation on a rental?
68. Can rental losses offset business income if my spouse qualifies as a real estate professional?
69. Can I group a rental property with my operating business for tax purposes?
70. What happens to accelerated depreciation when I sell my rental property?

Owner expenses and family planning

71. How do I set up an accountable plan for my S corporation?
72. Can my business reimburse part of my home expenses without calling it rent?
73. Can I rent my home to my business for company meetings?
74. Which meals and travel costs can a business owner deduct in 2026?
75. Can my business pay for a family trip if I also have business meetings?
76. Should I put my spouse on payroll to lower our household taxes?
77. Can I pay my children from my business for legitimate work?
78. Can my business reimburse my personal phone, internet, and vehicle costs?
79. What documentation do I need for shareholder loans to my company?
80. How do I fix personal expenses incorrectly booked as business deductions?

State taxes and multiple entities

81. Is a pass-through entity tax election worth it for a $1 million profit business?
82. Can I deduct state income taxes through my S corporation?
83. Which state taxes my business if I live in Pennsylvania but have clients nationwide?
84. Do remote employees create business tax filing obligations in other states?
85. Can I move my business to Florida and stop paying tax to my old state?
86. Does forming an LLC in Wyoming reduce taxes if I operate elsewhere?
87. Should each rental property be in a separate LLC for tax purposes?
88. How are management fees between my companies taxed?
89. Can one company pay another company I own for shared staff and overhead?
90. When do related-party transactions create extra tax reporting requirements?

Sale, amendments, and audit exposure

91. How is the sale of a business taxed if I receive $5 million?
92. Is an asset sale or stock sale better for an S corporation owner?
93. Can qualified small business stock reduce tax when I sell my C corporation?
94. Should I convert my S corporation to a C corporation before a future sale?
95. How are earnouts taxed when I sell my business?
96. Can I amend three years of business returns to claim missed deductions?
97. How far back can I correct an incorrect depreciation method?
98. What records should I keep to support large tax deductions?
99. What triggers an IRS audit for a business earning $1 million?
100. When should a $1 million profit business owner hire a tax advisor instead of a return preparer?

Plan with your actual numbers

Bring prior returns, current financials, payroll, ownership documents, and asset records. Book a Call with AE Tax Advisors to review the next decision.