The sinuses are cavities, or air-filled pockets, near the nasal passage. Like the nasal passage, the sinuses are lined with mucous membranes. There are four different types of sinuses: 1  Ethmoid sinus. 2  Located inside the face, around the area of the bridge of the nose. 3  This sinus is present at birth, and continues to grow. 4  Maxillary sinus.
AARP Social Security Resources. If you and your spouse file a joint return with a combined income below $32,000, your benefits are out of reach. For income between $32,000 and $44,000, up to 50 percent of benefits may be taxable, and up to 85 percent if combined income is more than $44,000. For more information, go to Social Security's website.
The Internal Revenue Service says you can figure out whether you have to pay taxes on Social Security by adding half of your annual benefit to your other income. If the total is more than $32,000 and you file a joint return, some of your benefits must be reported as taxable income on your tax return. For single filers the threshold is $25,000. For example, if you file as single and your annual benefit is $15,000, half of your benefit amount is $7,500. You you can earn up to $17,500 in additional income before you hit the $25,000 mark and have to pay taxes on Social Security benefits. Taxable Percentage When Social Security is taxable at all, you have to pay taxes on at least 50 percent of your benefits. As your income increases the percentage can reach a maximum of 85 percent of your annual benefit amount.