Deductions & credits

From IRS Pub 17

Taxes for local benefits.   Deductible real estate taxes generally do not include taxes charged for local benefits and improvements tending to increase the value of your property. These include assessments for streets, sidewalks, water mains, sewer lines, public parking facilities, and similar improvements. You should increase the basis of your property by the amount of the assessment.

  Local benefit taxes are deductible only if they are for maintenance, repair, or interest charges related to those benefits. If only a part of the taxes is for maintenance, repair, or interest, you must be able to show the amount of that part to claim the deduction. If you cannot determine what part of the tax is for maintenance, repair, or interest, none of it is deductible.   
Taxes for local benefits may be included in your real estate tax bill. If your taxing authority (or mortgage lender) does not furnish you a copy of your real estate tax bill, ask for it. You should use the rules above to determine if the local benefit tax is deductible. Contact the taxing authority if you need additional information about a specific charge on your real estate tax bill.
Itemized charges for services.    An itemized charge for services assessed against specific property or certain people is not a tax, even if the charge is paid to the taxing authority. For example, you cannot deduct the charge as a real estate tax if it is:
  • A unit fee for the delivery of a service (such as a $5 fee charged for every 1,000 gallons of water you use),

  • A periodic charge for a residential service (such as a $20 per month or $240 annual fee charged to each homeowner for trash collection), or

  • A flat fee charged for a single service provided by your government (such as a $30 charge for mowing your lawn because it was allowed to grow higher than permitted under your local ordinance).

  
You must look at your real estate tax bill to determine if any nondeductible itemized charges, such as those listed above, are included in the bill. If your taxing authority (or mortgage lender) does not furnish you a copy of your real estate tax bill, ask for it.
Exception.   Service charges used to maintain or improve services (such as trash collection or police and fire protection) are deductible as real estate taxes if:
  • The fees or charges are imposed at a like rate against all property in the taxing jurisdiction,

  • The funds collected are not earmarked; instead, they are commingled with general revenue funds, and

  • Funds used to maintain or improve services are not limited to or determined by the amount of these fees or charges collected.