Guias · finanças pessoais
Compound interest calculator
Project how small monthly contributions can compound over time with realistic rate scenarios.
Small monthly contributions compound over time when you stay consistent. The calculator below projects future balance from your starting amount, monthly deposit, and estimated annual rate.
Try conservative and optimistic scenarios — this is composition math, not a market forecast.
Simulator inputs
- Starting balance — what you already have invested today.
- Monthly contribution — a sustainable amount you can reserve each month.
- Annual rate — use a conservative historical reference (e.g. inflation + 4–6% for a mixed fixed-income mix).
- Time horizon in years — a realistic goal horizon.
Patrimônio projetado
R$ 43.676,04
Por trás do sistema
A mesma lógica de projeção composta usada em dashboards financeiros e simuladores SaaS que desenvolvo para clientes.
Versão em português (original): /pequenos-investimentos