2021 Tax deductions directly from IRS website

What must I know? Where to find the answer

What kinds of federal taxes do I have to pay?

How do I pay them? See chapter 1.

What forms must I file? See chapter 1.

What must I do if I have employees? See Employment Taxes

Do I have to start my tax year in January, or can I start it in any other month? See Accounting Periods

What method can I use to account for my income and expenses? See Accounting Methods in chapter 2.What must I do if I disposed of business property during the year?

What kinds of business income do I have to report on my tax return? See chapter 5.

What kinds of business expenses can I deduct on my tax return? See Business Expenses in chapter 8.

What kinds of expenses are not deductible as business expenses? See Expenses You Cannot Deduct in chapter 8.

What happens if I have a business loss? Can I deduct it? See chapter 9.

What are my rights as a taxpayer? See chapter 11.

Where do I go if I need help with federal tax matters? See chapter 12.