Summary
Highlights
Banks primarily operate by lending money from depositors (superavitary agents) to borrowers (deficitary agents). The Certificate of Bank Deposit (CDB) is a low-risk, fixed-income investment that allows individuals to lend money to banks and earn a return. Unlike savings accounts, CDBs offer better yields, but the money is not merely sitting idle.
CDB returns are often linked to the Certificate of Interbank Deposit (CDI) rate. The CDI rate is typically 0.10% lower than the SELIC rate, which is Brazil's basic interest rate. The SELIC rate, determined every 45 days by the Central Bank's COPOM, influences interest rates across the economy, affecting both investment returns and loan costs. A higher SELIC means better returns for fixed-income investments like CDBs.
CDB investments are subject to Income Tax (IR) and the Tax on Financial Operations (IOF). IR is progressive, decreasing the longer the money is invested, reaching 15% after two years. IOF is only applicable for the first 30 days of the investment, with the rate decreasing daily until it becomes zero. It's crucial to leave money invested for more than 30 days to avoid significant IOF deductions.
CDBs come in different types: post-fixed, pre-fixed, and hybrid. Post-fixed CDBs (e.g., 100% of CDI) have returns that fluctuate with the CDI. Pre-fixed CDBs offer a guaranteed return rate for the entire investment period, regardless of SELIC changes. Hybrid CDBs combine both, offering a fixed rate plus a percentage of the CDI. Investors should be cautious of excessively high-yield promises, as they often come with short terms or higher risks.
Liquidity and duration are key considerations. Some CDBs offer daily liquidity for emergency reserves, while others are locked for months or years. Investors must align their chosen CDB with their financial goals. The FGC (Credit Guarantee Fund) protects CDB investments up to R$250,000 per CPF per institution, providing security against bank failures. However, it's generally more effective for smaller institutions due to the sheer volume of funds in large banks.
The most advisable way to invest in CDBs is through investment brokerage firms rather than directly through a bank. Brokerage firms offer a wider range of CDB options from various banks, potentially providing better returns and choices. It's essential to research and understand all conditions, including FGC coverage, before making an investment.