22% or 12%? Have Foreign income and social security/US pension income. TurboTax calculates $14,000 taxable income and subject to 22% tax rate and not 12%. Why?

I am 67 married filing jointly living in UK both of us working and receiving SS. I am receiving annual payments from my pension. I don't understand how my tax was computed. The tax table say 12% but TurboTax calculated 22%. What am I missing?