Mr Sunak’s income was £329,561, which included his ministerial salary (£74,255) and MP wage (£81,908).
Mr Sunak has repeatedly promised to publish his return in recent months, and faced continued pressure to reveal the documents when it emerged Nadhim Zahawi settled an estimated £4.7million bill with HMRC while he was Chancellor.
His family finances previously faced scrutiny while he was Chancellor when the “non-dom” status of his wife Akshata Murty was revealed.
The arrangement reportedly saved her millions while the cost of living soared.
Following the controversy, Ms Murty, the billionaire’s daughter who married Mr Sunak in 2009, declared that she would pay UK taxes on all her worldwide income.