Deadline extended to November
The public are being urged to submit their tax returns as soon as possible if they want to receive a rebate before Christmas.
Around 21,000 people have yet to send the form.
The deadline was extended until 6 November over concerns about the effects of the pandemic.
Gerard Higgins is from the Treasury's tax division:
Tiny percentage of government buildings have solar panels
Earlier this year Manx Utilities was granted approval for 1,200 panels (735kW) on the NSC
Douglas East candidate says integrity of whole election has been cast into doubt'
Dave Mackey backs calls for a full recount of September's vote
Defeated candidate calls for Island-wide recount
Onchan's recount saw two candidates gain a combined 180 votes
Manx Care CEO: Manx Care deficit a 'prudent' forecast
Chris Stockport says he doesn't want or expect to finish the year with forecast £19.2m deficit