Every January, college-bound students and their families, as well as students already in college, complete the annual Free Application for Federal Student Aid ''FAFSA'' form, the first step in getting financial aid.

FastWeb.com, the free college scholarship search website, offers the following tips on avoiding the most common mistakes in completing the form. Mistakes on the application can delay its processing.

• The most frequent mistake made is leaving a field blank. If the answer is zero or the question doesn't apply to you, write in a zero. If you leave a question blank, the processor will assume that you forgot to answer.

• Follow instructions with regard to using a pen or pencil.

• Use the 1040 federal tax return for income reporting and taxes paid. Many parents and students mistakenly use their W-2 form.

• Don't forget to report all the required sources of untaxed income. These include Social Security, child support and Aid to Dependent Children (ADC).

• Report your correct marital status. If you plan to file as a married student, you must be married on or before the date that you sign your FAFSA.

• Make sure to include your stepparent's information.

• Include yourself in the household size. Even if you didn't live there during the previous year, you should always include yourself as part of your parent's household.

• Don't forget to sign the application. If you're filing as a dependent, both you and your parents must sign (if you file electronically, make sure you return the certification page).

• Remember to file on-time. Priority for programs with limited funds is often given to students who file the FAFSA as soon after Jan. 1 as possible.

• As with all forms and applications, make sure you read the instructions and questions carefully. If you're unclear about a question or are having trouble filling out the FAFSA, call the Federal Student Aid Information Center toll-free at 800-4-FED AID (800-433-3243).

More tips: www.fast web.com