Investments that operate with fixed income have a variable that is well researched by people who want to invest. By the way, various securities and assets are defined by the interbank deposit, also known as DI rate. It is what maintains a balance in the banks' accounts: as they need to end up with a positive balance at the end of the day, some loan transfers take place. This allows financial institutions to end up with a favorable result.

Thus, as there is a transfer of loans, the amounts need to be taxed. That's where DI comes in, as it will ensure that, in addition to the positive cash balance, banks can avoid taking on debt. Furthermore, since banks make transfers, they also need proof. At this moment, the Interbank Deposit Certificate (CDI). This document is what certifies the value of the DI rate.

But in this article, we will focus on this rate. The influence of DI on business, how people's income has impacts as it changes, what to decide in relation to investments, and much more can be found here. Furthermore, we will understand what DI funds are and how people invest in groups with other investors.

DI rate: functioning and weight on income

So, banks transfer values between themselves, with loans, to maintain positive indicators. But there are other very useful functions of this very important fee. Since it has established use for these operations between banks, this has an influence on the financial market. In this way, the purchase of securities, whether from companies or from other sources, may become worth more, depending on what is stated in the value of the DI rate.

Often, the DI rate is also close to the basic interest rate, the Selic. Therefore, this indicator serves another function, that of indicating whether any economic plan or strategy will yield good results or not. In fact, the rate calculation is based on the chances that financial institutions have of making a profit on these transfers.

Still, there is another organization that plays the role of integrating the financial institutions involved with DI. This is the Central for Custody and Financial Settlement of Private Securities, or CETIP. This center is responsible for controlling transfers via TED and DOC as well, which is why it is in your daily life more than you might imagine. Added to this task, there is the function of bringing income from the investments made.

Learn more about calculating the DI rate

Before, you learned how CETIP operates in some crucial functions in the financial market. Together, the agency also points out the average DI rates. To this end, CETIP seeks to know whether the rates applied between banks are consistent with the investments, that is, whether they can be applied or not. A roughly speaking, the control panel observes if:

• there are at least 100 negotiations carried out between financial institutions; It is
• the total value of interbank transfers amounts to at least R$ 30 billion.

If these conditions are not met by the banks, then the DI rate now has the same value as the Selic rate, which will consider an average of all transactions made with public titles of the federation in one day.

Investment in DI fund

Having investments with a DI fund means that you can place resources in a fund with securities that follow the rate set by the CDI. In other words, what you have is an application with several securities to invest in, according to the certificate.

If the Selic or CDI changes, there may be profit or loss on investments. That is, if they rise, the person will receive more, if not less. However, the more investments and participation she has in the fund, the more she tends to receive. In the end, the gain will depend on the number of shares that the person owns in that fund as well. To know how much the fund will yield, people who invest pay attention to the part of the CDI that is planned for liquidity. For example, if the CDI yield is 75% and this rate is 4%, then the invested equity grows by 3%.

Furthermore, there is the burden of cost when people seek to invest in DI fund. The management of this fund has a charge based on the amounts collected. It is common for this fee to be annual, in addition to considering the total that the investor has in the fund. Along with this issue, federal agencies are included in this characteristic, because Income Tax (IR) and Financial Operations Tax (IOF) are charged.

While the IR is charged every six months on each share that is participating in the fund, the IOF is only charged for applications lasting a maximum of 30 days. But, how does the fund's liquidity work? In almost all contributions, the return on investment comes within one business day after the person requests the redemption of the amount that will be used.