If you use a portion of your home for business purposes, you may be able to take a home office deduction whether you are self-employed or an employee. Expenses that you may be able to deduct for business use of the home may include the business portion of real estate taxes, mortgage interest, rent, utilities, insurance, depreciation, painting and repairs. 

What is Estimated Tax?
Estimated tax is the method used to pay tax on income that is not subject to withholding, such as self-employment income, interest, dividends, rents, alimony, etc. In addition, if you do not elect voluntary withholding, you should make estimated payments on other taxable income, such as unemployment income and the taxable portion of social security benefits. 

To reflect the recent increase in gas prices, the IRS raised the standard mileage rates for six month period from 7/1/08 through 12/31/08. The rate will increase to 58.5 cents per mile for business miles driven from 7/1/08 through 12/31/08, an eight cent per mile increase from the rate in effect for the first six months of 2008 [see Rev. Proc. 2007-70 (2007-50 IRB 1162) ]. The rate for computing deductible medical or moving expenses will also increase by eight cents per mile to 27 cents per mile, up from 19 cents per mile for the first six months of 2008. The rate for providing services for a charity is set by statute, and remains at 14 cents per mile. IRS Ann. 2008-63, 2008-28 IRB .