Allergies and the Taxman.

They both arrive in spring, and they both can be a pill.

But, the clock is ticking for the latter, with only six days left to file tax returns.

Because April 30, the traditional deadline for tax returns, falls on a Sunday this year, Canada Revenue Agency has extended the deadline to Monday.

In efforts to make the filing process more accessible and faster, CRA has created online options which are available 24 hours a day.

For example, those who make less than $25,000 can file their tax returns for free on CRA-certified software programs listed on their website, said spokesman Sam Papadopoulos.

"Major changes are ongoing," he said. "The initiatives are to provide taxpayers choices in dealing with their affairs online without having to visit the office."

There are 39 tax service offices in Ontario.

Tax laws have also undergone some changes for the 2005 year, including adjustments made to reflect same-sex legislation passed last year.

The maximum amount for the Child Disability Benefit supplement has also increased to $2,000.

Piyush Mody, manager and chartered accountant at Softron Tax, said some common mistakes taxpayers make when filing their returns is to overlook important deductions, such as medical expenses or deductions of non-refundable credits of dependents.

For more information, go to cra-arc.gc.ca.