Contact your cell phone carrier and request to block a number. For example, if your iPhone data and voice plan is currently with AT&T, contact their customer support line to request a number to be blocked. This is the only method of blocking a number on the iPhone without Jailbreaking it.ontact your cell phone carrier and request to block a number. For example, if your iPhone data and voice plan is currently with AT&T, contact their customer support line to request a number to be blocked. This is the only method of blocking a number on the iPhone without Jailbreaking it.
All credits and deductions carry limits. Some carry a specific dollar limit. For example, the child tax credit cannot exceed $1,000 for each child. Other credits and deductions are limited by your income. For example, you can typically claim charitable deductions up to 50 percent of your adjusted gross income. Still other credits and deductions have specific limits for taxpayers whose adjusted gross income falls within certain ranges.
If you don't owe any tax, you may also be eligible to receive up to 40 percent of the credit ($1,000) as a refund. Educator expenses deduction-Elementary and secondary educators can deduct up to $250 in related job expenses as an adjustment to income, even if not itemizing deductions.aximize your next refund with these tax deductions and credits. According to the Internal Revenue Service, more than 101 million income tax refunds were issued in 2013, averaging $2,651 each.