Normally, Swedes are required to file their tax forms by midnight on May 2nd.
But on Wednesday, the Swedish Tax Agency (Skatteverket) announced it was extending the 2012 tax filing deadline to Thursday, May 3rd.
The reason: technical problems with the agency's tax filing help line, Skatteupplysningen.
"Throughout the day it has been hard to get through to Skatteupplysningen. Most do get through, but a large number of people have had problems," agency spokesperson Kay Kojer said in a statement released on Wednesday afternoon.
"Therefore we've decided to extend the time allowed to file tax returns until May 3rd."
The extension means that anyone who files their tax return by 11.59pm on May 3rd won't be slapped with a late filing fee.
In addition, Swedes who file electronically before the new, extended deadline, will still receive their tax refunds before the Midsummer holiday.
According to the tax agency, more than 4.5 million Swedes filed their tax returns electronically so far this year.
While most use the Tax Agency's website, a record number of filers – more than 100,000 -- have also filed their taxes using the agency's smarthphone apps.