He added this will save the taxpayer from an expensive local by-election.
“I will remain as a Marlborough District Councillor until October of this year at which time I will stand down from that role,” he said.
Arbuckle went on to say, “This has always been my intent in order for local ratepayers to avoid a costly $130,000 local by-election if I were to resign before that date”.
However, on Monday, while Arbuckle said he would reconsider his position in October he did not commit to resigning until Tuesday.
Arbuckle also said after “feedback and upon reflection” he will be donating the salary he received as a councillor from when he became an MP.
“In light of feedback and upon reflection, any remuneration I have received in my role as a local councillor since the date of the general election in October last year, as well as any future remuneration received until I stand down, will be donated to a local district community charity.
“This is my fifth term as a Marlborough District Councillor, I am passionate about local issues, and I will continue to work hard for my community,” he added.