Some that come to mind:
- Every other year emphasis on itemized deductibles, e.g., charitable contributions, property tax, and state/local income tax.
- Take full advantage of pre-tax deductions, e.g., 401k and IRA, insurance premiums and HSAs and/or flex spending accounts (as available).
- Be aware of saver's credit cliffs, e.g. the 50% cutoff at $36,000 for MFJ
- Most (all?) commercial tax prep software will calculate the minimum tax for "normal" returns. Examples to the contrary could be useful.
- Much better to use such software (or roll-your-own spreadsheet customized for your situation) during the tax year instead of waiting until after the fact.