2021 - TIN Matching to Reduce Your B-Notices and Eliminate Proposed Penalties

Starter Question: What is TIN Matching?
What are the benefits of the TIN Matching System?
Who must request access to the TIN Match system?
How do we register to use the system, including the 2-step verification system introduced 12/10/17?
How does the TIN Match system work?
What are the best practices for managing 1099 reporting requirements?
How do I deal with vendors who report incorrect information on their W-4’s?
B-Notices: when I receive a letter from the IRS stating I have incorrect names/TINS on my 1099’s, what must I do and what about the deadlines?
What if I receive a Notice of Proposed Penalty?
How do we negotiate a reduction or eliminate the penalty?
How do we leverage the Reasonable Cause Regulations?
How does TIN Matching impact the fight to reduce proposed penalties?