1040: This is the standard individual income tax return form used by US taxpayers to report their income, deductions, and credits to the Internal Revenue Service (IRS).

W-2: This form is provided by employers to their employees and shows the amount of money earned, taxes withheld, and other payroll-related information.

1099: This form is used to report various types of income, including self-employment income, rental income, and investment income, among others.

P60: A document that shows your total income and the amount of tax you’ve paid over the tax year.

P45: A document that your previous employer gives you when you stop working for them. It shows how much you’ve earned and how much tax you’ve paid.

SA302: A document that shows the income you’ve declared on your tax return for a specific tax year.