For 2021 the total contributions you make each year to all of your traditional IRAs and Roth IRAs can't be more than:
Also, your Roth IRA contribution may be limited based on your filing status and income. Please see 2021 - Amount of Roth IRA Contributions You Can Make for 2021.
Please see Worksheet 2-1. Modified Adjusted Gross Income for Roth IRA Purposes for additional information.
Shouldn't there be a way for TurboTax to calculate my limited contribution amount as on Worksheet 2.1? I can't find it.
You can go to the IRA contribution section and enter different contribution amounts and see if you get a penalty warning:
Also, once you enter a Roth contribution then you can look at the "Roth IRA Contribution Limit Worksheet" to see the calculation (you will have to pay for your return before you can access it):