My wife is 65, she wants to buy 6500 IRA, how do I do this.

To claim an IRA, you and/or your spouse if you file a joint return, must have earned income, such as wages, salaries, commissions, tips, bonuses, or net income from self-employment. Taxable alimony and separate maintenance payments received by an individual are treated as compensation for IRA purposes.

Earned income does not include earnings and profits from property, such as rental income, interest and dividend income, or any amount received as pension or annuity income, or as deferred compensation, or Social Security income.

You will need to select which IRA you want-a Traditional IRA or a Roth IRA

See What is the Difference Between a Traditional IRA and a Roth IRA?

https://ttlc.intuit.com/questions/1899355-what-is-the-difference-between-a-traditional-ira-and-a-roth-ira

You can determine the effect of adding an IRA contribution by entering it into TurboTax and viewing the difference on the refund meter.

You should then select a financial institution such as a bank or brokerage firm to purchase your IRA.

To report a Roth or Traditional IRA in TurboTax:

• Type in ira contributions in the search box, top right of your screen, then click the magnifying glass

• Click the jump to ira contributions link in the search results.

• Follow the onscreen instructions to enter