They will also be able to apply for early refunds, allowing them to smooth out seasonal income fluctuations.
Local authorities affected by the drought classification are: Stratford, New Plymouth, South Taranaki, Whanganui, Rangitikei, Manawatu, Palmerston North, Horowhenua, Kapiti Coast, Upper Hutt, Porirua, Wellington, Lower Hutt, Grey and Buller.
"We know the rural community is having a tough time," Nash said.
"Many farmers will have more urgent issues on their minds than tax compliance. Inland Revenue has confirmed there will be greater flexibility and assistance for those affected.
"I strongly encourage any farmers who are struggling to meet their tax obligations because of the adverse conditions to talk to their accountant and engage with Inland Revenue."