This is a common issue,
under the social security rules once an individual reaches full retirement there is no longer any income limit,
If you were born between 1943--1954 your full retirement age is 66
so you will have no earnings limit
If you have a significant income, you may have to pay tax on your benefits,
This usually happens only if you have other substantial income (such as wages, self-employment, interest, dividends and other taxable income that must be reported on your tax return) in addition to your benefits.
No one pays federal income tax on more than 85 percent of his or her Social Security benefits based on Internal Revenue Service (IRS) rules. If you:
more than $34,000, up to 85 percent of your benefits may be taxable.
more than $44,000, up to 85 percent of your benefits may be taxable.