Why doesn't my CPA proactively tell me of these strategies?
In short, it is because they do not know them. Tax preparation has largely become a commoditized profession over the years due to computer software. Many CPAs see themselves as tax preparers rather than trusted advisors. In many instances the CPA spends valuable time doing bookkeeping during tax season. Once that is completed the CPA electronically converts their client's bookkeeping to a tax return. There is little, if any, time spent on tax planning.
If I implement these strategies, will my audit risk increase?
Perhaps, but this concern should be mitigated by good bookkeeping, accurate client records, and properly prepared tax returns. Our experience is that audit risk does not increase.