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Home / Accounting & Tax Knowledge Hub / Q1006

Q1006. What happens if the half-year profit estimate is too low?

Answered by the NYC Visa & Translation accounting and tax team

Section 67 ter imposes a surcharge of 20 percent of the shortfall where the estimated net profit used for PND.51 is understated by more than 25 percent of actual net profit without reasonable cause. Reasonable cause must be evidenced, for example an unforeseeable event in the second half. Reusing last year's figure without reviewing actual first-half results is the usual reason companies fall into this charge. Ask our Thai accounting team to review your position by phone, LINE or email before you file.

Based on the Revenue Code, the Accounting Act B.E. 2543 and related law as at August 2026. General information only, not advice on a specific matter — verify with the Revenue Department (rd.go.th) before acting.

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