By the end of last week over 29,000 returns had been submitted out of an expected 33,000.
Those yet to submit are encouraged to do so as an automatic penalty of £200 now applies for any sent in after 29 February.
An additional daily charge of £10 now applies for any sent in by 4 April.
The highest number of returns were submitted online, with over 21,000 submitted via the government portal.
The 2023 returns will be the first where everyone is responsible for personal tax returns after the States agreed to uncouple the responsibility from married couples.
These can now be submitted online through MyGov, while paper copies will be available from Edward T Wheadon House at the end of April.
The deadline is much earlier for these returns – 31 January 2025.