Yes, if you would like to receive a deduction for contributing to a traditional IRA, you will have to put money into one.
You may wish to contribute to an IRA, especially if your place of employment doesn't have a retirement plan.
You may be able to contribute up to $5,500 ($6,500 if you are 50 or older) to a traditional IRA to receive a deduction and possibly lower your tax.
Another possiblilty is to contribute to a Roth IRA, which will not provide any immediate tax benefit but will be tax-free, including any gains, when you withdraw the funds (once you are at least 59 1/2).