पक्षमाससंवत्सरलाभो लाभः ॥ कZ_०२.६.२५ ॥
pakṣamāsasaṃvatsaralābho lābhaḥ
Profit (lābha) is the gain realized over a fortnight, a month, or a year.
Kauṭilya expects periodic profitability assessment at multiple time horizons (short, medium, annual).