It does factor in inflation. I am using a 3% safe withdraw rate in my calculations which is where I withdraw 3% of my portfolio balance in year one, then in yea

It does factor in inflation. I am using a 3% safe withdraw rate in my calculations which is where I withdraw 3% of my portfolio balance in year one, then in year two I take that original amount and adjust it up by inflation, and continue doing this each year. So it will maintain the same buying power.