How is Schedule A Line 5a being calculated for someone residing in Texas?

[AccountingExecs]

Hey everyone, I am new to ProConnect and am still trying to figure out the system.  I am currently doing a return for a client who resides in Texas, and they are itemizing their deductions. When I review their return, I see an amount in Line 5a of the Schedule A, but I can't see how this is being calculated.  Does anyone out here have experience on how to drill down an see how things are being pulled in and calculated?

[BobKamman]

That's the line for sales tax?  The amount is pulled from the Optional Sales Tax Tables, published by IRS to show what a normal Texan (pardon the oxymoron) with that income and family size would pay in sales tax, excluding vehicles and a couple other things.  That has been around more than 50 years, but you haven't, and you learn something new every day.  

[AccountingExecs]

Bob, thank you for the response.  I do understand that it is pulled from the Optional Sales Tax Tables, but is there a way to see that in ProConnect? The only thing that I can see is the worksheet that shows the amount, but it does not show where that number is being calculated.  I also searched for the tables online for 2024 but don't see an updated table for the tax year.  I just want to make sure I am comfortable with all of the numbers on the return before I submit it for e-file.

[BobKamman]

Apparently IRS now has an online calculator.  I couldn't find the published tables either, but I didn't look very long.  It's possible that the tax software links to this.

https://www.irs.gov/credits-deductions/individuals/use-the-sales-tax-deduction-calculator 

[BobKamman · Accepted solution]

I'm going to be late to work but I took another couple minutes to find this.  See pages 12-17

https://www.irs.gov/pub/irs-pdf/i1040sca.pdf 

[AccountingExecs]

I can't thank you enough.  Thank you for taking the time to help me out.