Hi!
Per Diem:
U can take the IRS standard allowance per day ($41) or U can use the actual city rate, which for some is close to $60. U can use this when you're overnight. You have to look at that amount, and then deduct what the company pays you. I get about $38/day per diem, so many cities I'm ahead on what I can right off.
The gov't year ends Oct 1, so the perdiem rates are different before and after Oct 1, as are the mileage rates.
If you're at a normal airline, where you're assigned a base, and all trips begin and end at that base, you can't write off a crashpad/commuting expenses. If you are temporarily assigned another base for a period of time, you CAN deduct all the expenses associated with commuting from your assigned base to that TDY base (this happened to a friend of mine for about 6 weeks).
You can deduct a lot of stuff, and the mileage associated with that. For example, if you drive to a store specifically to buy aviation equipment, you can write off the equipment and the mileage.
Does your company require you to be in contact with them by phone? Give them your cell phone # as your contact number and write off your cell phone.
Are you searching for a job? Then you can write off those expenses. Today, many airlines require you to apply online-so you need online connectivity to apply. If you're using a computer for any work-related/job search related stuff. U can write off the % U use your computer/printer/fax, whatever, for those purposes.
If you get a WX service for your phone (pretty cool) you can write that off as a job expense.
Charity: There is a separate mileage rate for charity, so if you drive to a location to drop off your stuff or hand in a donation, or if you're volunteering for a charity U can write off all those miles.
I would recommend TurboTax. I have used them for quite a while, and this year they changed their format, which makes it even more user friendly, especially if you go back in to your return to change anything after going through it the first time.
Also, you can deduct 50% of Meals, etc. if you're eating at home or at your base if you eat out with fellow pilots. You can also deduct gifts to pilots/employees up to I think $25 ea, so those Christmas cards and mailings are deductable to all you pilot friends.
****IMPORTANT****
The supposed tax cuts for middle income returns were a sham, unless they change the tax code, because of the Alternative Minimum Tax. Congress knew that the AMT will affect more and more people and more than make up for the middle class tax cuts they signed off on.
Business Week estimated that by 2010, virtually EVERY return with income of about $100K WILL be paying the AMT. The only way to know if you are required to pay AMT is to calculate the AMT for your return (which is easy in TurboTax, and very hard if you're doing the return by hand). If you don't calculate the AMT, you won't pay it, and if you're liable and the IRS finds out you're in trouble.
The AMT is VERY complicated, and you make yourself more exposed to AMT by having kids, living in locations with higher property/income taxes, having a larger mortgage and higher 2% misc deductions, among other situations.
This year congress kept the floor of the AMT at $58K, I believe, but next year it's scheduled to move down to only $43K income (which was where it was supposed to be this year). Hardly anything except mortgage interest and charity is deductable for AMT purposes. For example, state/local income/sales/property tax, and the Misc business deductions are NOT deductable for the AMT.
Cliff
GRB
Note: I do know some tax preparers who have their airline employees write off ALL their commuting/crashpad expenses, but I don't see how that's legal at all.