From IRS.gov:
- The standard mileage rate for business use of a car, van, pick-up or panel truck is 55 cents for each mile driven. The standard mileage rate for the cost of operating a vehicle for medical reasons or as part of a deductible move is 24 cents per mile. The rate for using a car to provide services to charitable organizations is set by law and remains at 14 cents a mile.
- The value of each personal and dependency exemption is $3,650, up $150 from 2008. Most taxpayers can take personal exemptions for themselves and an additional exemption for each eligible dependent. This is one of more than three dozen individual and business tax provisions that are adjusted each year to keep pace with inflation. A complete rundown of these changes can be found in 2009 Inflation Adjustments Widen Tax Brackets, Change Tax Benefits.
- The amount of taxable investment income a child can have without it being taxed at the parent’s rate is $1,900, up $100 from 2008. For details, see Form 8615.
- There are several modifications to the definition of a qualifying child. For example, the child must be younger than the taxpayer, unless the child is totally and permanently disabled. These changes affect who can claim various tax benefits including the dependency exemption, child tax credit, credit for child and dependent care expenses, head of household filing status and the EITC. See the instructions for Forms 1040 or 1040a for more information.
- A new rule applies to the noncustodial parent in situations where a couple is divorced or legally separated after 2008. To claim a child as a dependent, the noncustodial parent must attach Form 8332 or a similar statement to his or her tax return. For pre-2009 divorces and separations, the noncustodial spouse still has the option of attaching certain pages from the divorce decree or separation agreement, instead of Form 8332. See Form 8332 for further details.
- A $3,500 or $4,500 voucher or payment made for such a voucher under the CARS “cash for clunkers” program is not taxable to the consumer buying or leasing a new car.
- Unemployment benefits up to $2,400 received in 2009 are tax free for unemployed workers. Every person who receives unemployment benefits can exclude the first $2,400 of these benefits on their return. Unemployment benefit amounts over $2,400 are taxed.