Simulation Shows How Much R$ 1,500 Yields in Nubank’s Turbo Cash Box After Income Tax Discount.
The Nubank Turbo Cash Box has become a popular option for those looking for a yield alternative above savings, with liquidity and simple investment.
We will show exactly how much it yields and R$ 1,500 invested in the Turbo Cash Box, including the impact of taxes, so that the investor understands the real gain of the investment.
How The Turbo Cash Box Works
Nubank offers cash boxes as a way to organize finances within the app itself.
-
With over 14 million baskets of earth moved, an ancient North American metropolis built a monumental pyramid of 30 meters and established a city with 20,000 inhabitants nearly a thousand years ago.
-
A 1,900-year-old treasure emerges from a Roman house destroyed by fire and sealed since antiquity in Romania, with coins and metals fused among the ashes.
-
The Brazilian colonial city that stopped in time and shares territory with a rocket launch base.
-
79-year-old woman challenges limits, visits 193 countries in the world after 56 years of planning and reveals the behind-the-scenes of a global journey that few have managed to accomplish.
The Turbo Cash Box specifically invests money in a RDB (Bank Deposit Receipt), which is guaranteed by the FGC (Credit Guaranty Fund) up to R$ 250,000 per CPF per financial institution.
That is, in case of problems with the issuing bank, the investor has additional security.
The return of the Turbo Cash Box is linked to the CDI (Interbank Deposit Certificate). At the time of the example, the CDI rate is 14.65% per year.
The Turbo Cash Box offers 115% of the CDI, which provides a gross return above investments linked only to 100% of the CDI.
Calculating The Gross Yield
With the CDI at 14.65% per year, the gross return of the Turbo Cash Box can be calculated by multiplying this rate by 1.15 (representing 115% of the CDI). The result is an annual gross return of 16.84%.
To understand how much this represents monthly, simply divide the annual return by 12 months. Thus, the monthly return is around 1.4%.
Applying this percentage to the invested amount, we have:
- Initial Investment: R$ 1,500
- Monthly Gross Yield: 1,500 × 1.4% = R$ 21
In this scenario, the gross balance after one month would be R$ 1,521.
However, this calculation still does not consider the income tax, which is levied on the yield.
Income Tax on Investments
As the Turbo Cash Box invests money in an RDB, the income tax follows the regressive table of fixed income investments, which works as follows:
- Up to 180 days: 22.5%
- From 181 to 360 days: 20%
- From 361 to 720 days: 17.5%
- Above 720 days: 15%
In the given example, the calculation is for one month of investment, which places the investment in the range of up to 180 days. Thus, the applicable rate will be 22.5% on the yield.
Net Yield With Income Tax Applied
Now, applying the income tax discount on the gain, the calculation is as follows:
- Gross Yield for the Month: R$ 21
- Income Tax: 22.5% of R$ 21 = R$ 4.73
- Net Yield: R$ 21 – R$ 4.73 = R$ 16.27
- Final Balance After One Month: R$ 1,500 + R$ 16.27 = R$ 1,516.27
Therefore, after considering the tax, the real yield for the month is close to 1.08% net, well below the initially calculated gross percentage.
Importance of Always Calculating The Net Yield
This example shows how essential it is for investors to always look at the net yield when analyzing any fixed income investment.
Often, the disclosure of percentages like “115% of the CDI” sounds very attractive.
But, when income tax comes into play, the effective gain decreases considerably, especially over short terms, where the income tax rate is higher.
In the long term, with terms exceeding two years, the tax rate drops to 15%, which improves the investor’s net yield.
Still, it is vital to understand this dynamic to avoid having a false impression of how much the money will truly yield.
Is The Turbo Cash Box Still Advantageous?
Even with the incidence of tax, the Turbo Cash Box can be interesting depending on the investor’s profile.
It offers practicality, daily liquidity, and yields higher than savings, which still pays a rate well below the CDI.
However, it is not tax-exempt as occurs, for example, with LCI and LCA (in some banks), or with the savings account.
Each investor should evaluate their objectives regarding time and liquidity needs. For those who need money available quickly, the Turbo Cash Box may be more advantageous than other products that require a lock-in period.
For those looking for greater tax efficiency, it may be interesting to analyze investment options exempt from income tax.
In the example presented, an investment of R$ 1,500 in Nubank’s Turbo Cash Box would yield, in the first month, approximately R$ 16.27 net after the income tax discount. Therefore, understanding the impact of taxation helps make more informed decisions when investing money.

Nubank
Danielso