How does "tax expense" as shown on the "history report" line 5, effect my tax calculations, especially if I take the standard deduction?

[stevetjt2]

how is it calculated?

[AnnetteB · Accepted solution]

The tax expense entry on your Tax History report is showing the Taxes You've Paid from Schedule A Itemized Deductions. 

Taxes You've Paid includes state and local income tax (or sales tax), state and local real estate tax, and state and local personal property tax. 

Since you are looking at a summary page of your history, the Taxes You've Paid is there for your comparison, but if you are using the standard deduction, then that number is not included when calculating your taxable income on your Form 1040.  Having it there on the page will give you some idea about whether you were close to using itemized deductions or if the standard deduction was better for your situation.