How many letters does the top answer for “income from capital investment paid in a series of regular payments” have?

The most common answer is annuity (7 letters).

Crossword clue: income from capital investment paid in a series of regular payments

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

annuity 7 letters wn-def

income from capital investment paid in a series of regular payments

rente 5 letters wn-def

income from capital investment paid in a series of regular payments