Hi,
To address the 1099 on your tax return, report the amount that is shown on the 1099 form. You can ask for a corrected 1099 form from your boss to try to get it fixed before the 10/15/24 extension deadline.
You can file a complaint with the IRS using Form 3949-A
You may also contact the IRS directly by phone.
If the return needs to be amended later within TurboTax to enter a corrected form 1099, then it can be amended within the TurboTax software. Here is a TurboTax article regarding amending a tax return:
TurboTax How to File An Amended Tax Return with the IRS
If you have an accountable plan, it should be tax-free. If you don't have an accountable plan, it should be on a W-2. An input will be made on Form 8919, and you will pay 1/2 of social security tax. Please refer to this thread response by Opus 17:
Employer gave me a 1099 for expense reimbursement instead of reporting it on my W2
