Maturity = ฮฃ P ร (1 + r/4)^((n โ m + 1)/3), summed over each monthly deposit m
โน2,000/month at 7% for 12 months yields a maturity value combining principal plus compounded interest per deposit.
Each monthly deposit earns interest for a different remaining duration until maturity, so each is compounded individually and summed.
This tool assumes quarterly compounding, the common RD convention; confirm your bank's terms.