Company A established SIMPLE IRA in 2007. Sole owner of A buys Company B in 2013 creating controlled group but does not offer SIMPLE IRA to Company B employees.

Same highly regarded CPA (partner in large regional firm) has been providing tax advice and tax preparation services for both companies and the sole owner for the entire period but has never mentioned the SIMPLE IRA coverage failure. Correction through VCP will be expensive.

Interested in thoughts on whether the standards of care for CPAs and/or tax preparers were breached in this scenario.

Thanks