will my income tax be less at age 70 /?

Answer 1

If you're in the US, your taxes will only go down if your income does. But there are a few things that reduce it a bit. At 65 you get a higher standard deduction. Also, depending on your non-social-security income, none or only part (up to 85%) of your social security is taxed - this does not depend on your age.

Answer 2

well, 49 more years for me.

I believe they reduce it when you turn 70.

Answer 3

No