सिद्धं कालमप्राप्तं करोत्यप्राप्तं प्राप्तं वेत्यवस्तारः ॥ कZ_०२.८.१० ॥
siddhaṃ kālam aprāptaṃ karoty aprāptaṃ prāptaṃ vety avastāraḥ
“Avastāra” is when one treats what is due as not yet due (delaying realization), or treats what is not yet due as due (premature realization).
Premature collection burdens subjects and disrupts production; delayed collection creates arrears, rent-seeking opportunities, and fiscal instability.