I played around with the numbers a bit this morning and realized that my rate of return (what I earn on my investments) is more critical to my monthly income then my tax rate.
What I used was a 3% return and varying inflation rates. If I don’t beat inflation I have less income but still enough. And if I assume varying tax rates (15-25%) I have enough.
What made the biggest difference is the rate of return. If I can increase it even 1% it has the greatest impact on my projected income. Lesson learned.