Effect of Modified AGI on Deductible Contributions If You ARE Covered by a Retirement Plan at Work.
Effect of Modified AGI on Deductible Contributions if You are NOT Covered by a Retirement Plan at Work
The best way to reduce your AGI is making max contributions to employer-based retirement plans and contributing the max to HSA account.
For a married couple who can reduce your AGI below 101,000 can contribute 5500+5500 /year to save more tax and to reduce tax bracket.
Best book to read before you start investing.
I like audiobook versions of this book