Taxes during retirement

[Mary Jay]

How to figure out what tax bracket you’ll be in during retirement? For example, let’s say a single person makes a 100K per year on W-2 right now working for a corporate world.  It’s taxed at about 25-30 percent, right? For simplicity let’s say this person pays 30 percent in taxes, which is 30k
Let’s say the same person when he or she retires, will be making the same amount, 100 K, from long term Rentals, which is a passive income and it’s been texted to 15%, correct? So he or she probably will be paying 15k, roughly?