Unless you had uneven income throughout the year, there is probably no benefit to annualizing your income. If you are self-employed and your income varies throughout the year would probably be helpful. If you had a very large capital gain or received a very large bonus in the third or fourth quarter it could be beneficial. But if you are a W-2 employee and your monthly income doesn't vary, then it's not going to help you. In addition, the IRS will calculate whether you actually owe an underpayment penalty. They won't annualize it, but they will do the calculations for you and your spouse going from single to married filing joint. They do it whether you do or not.
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