If you are qualified to use Standard Deduction and using any of the tax software in the market ( for DIY use ) there is no way you can over-ride the amount and e-file.
I just wonder why would you not want to use what the law allows you --- what are you trying to achieve ?
If you are filing married separate, then if your spouse files using itemized deductions, then you are required to file itemized, no matter which method is "better". TurboTax gives you the option on choosing standard or itemized. I think (relying on memory) that you search for "Itemized Deductions" and jump to the result; if this works, it will give you a screen that allows you to choose itemized even if TurboTax is suggesting standard. (Sorry, the TurboTax Help screens are coming up blank on previous answers, so I can't give you a useful link).
I don't know of any reason you can't choose itemized, even if there is no benefit to do so.
HOW TO FORCE ITEMIZED DEDUCTIONS
Many taxpayers are surprised this year because their itemized deductions are not having the same effect as they did on past tax returns. The new higher standard deduction and the elimination of certain deductions, as well as the cap on state and local taxes have had a major impact.
Your itemized deductions have to be more than your standard deduction before you will see a change in your tax owed or tax refund. The deductions you enter do not necessarily count “dollar for dollar;” many of them are subject to meeting tough thresholds—medical expenses, for example, must meet a threshold that is pretty hard to reach. The software program uses all the IRS rules that apply to the expenses you enter, and it tells you if you have enough to use your itemized deductions or if using the standard deduction is more advantageous for you. Under the new tax laws, some deductions have been capped—there is a $10,000 limit to the itemized deductions for state, local, property and sales taxes.
Your standard deduction lowers your taxable income. It is not a refund
2018 Standard Deductions:
Single $12,000 (+ $1600 65 or older)
Married Filing Separately $12,000 (+ $1300 65 or older)
Married Filing Jointly $24,000 (+ $1300 each spouse 65 or older)
Head of Household $18,000 (+ $1600 65 or older)
Look at line 8 of your Form 1040 to see your standard or itemized deductions.
DO NOT OVERRIDE Turbo Tax - that just creates more issues.
using a smaller number than the standard deduction IS the itemized deduction, which you are able to do if it is to your advantage. Just click the check box on line 18 of schedule A in TT.
Let's not confuse things, while I agree you can't use a lower 'standard deduction', in most cases you have the option to use a lower itemized deduction, which is really get to the result the question is really asking.
please see IRS publication 501, page 22 where it states:
Most taxpayers have a choice of either taking a standard deduction or itemizing their deductions. If you have a choice, you can use the method that gives you the lower tax
RonSP appears to be wanting to use a deduction of more than the amount of itemized deductions and less than the standard deduction, which is not permitted.
Even if one was permitted to do so, I suspect that the result would be not only a lower current-year tax liability but an increased future-year tax liability due to lost carryforward of the R&D tax credit.
<<RonSP appears to be wanting to use a deduction of more than the amount of itemized deductions and less than the standard deduction, which is not permitted.>>
if if this is what he is trying to do, then I agree it is not permitted .... it’s either take the standard deduction as stated or take the itemized deduction that you can document ... but you are permitted to take the lower of the two in most situations by clicking the check box on line 18
Whereas I have failed to find any specific prohibition against using as deduction other than allowed itemizing of expenses or the standard, the nearest is the definition of taxable income ---> 26USC 63
(b)Individuals who do not itemize their deductions In the case of an individual who does not elect to itemize his deductions for the taxable year, for purposes of this subtitle, the term “taxable income” means adjusted gross income, minus—
I think therefore the answer is NO -- you cannot use a number different than the Standard Deduction , unless you choose to Itemize .