The daily income is about ten thousandths 1.28. The annual rate of return is around 4.8%. If you don't compound interest, the annual yield is 0.000 128*365=0.04672, and the actual compound interest is1.000128 365 =1.047825, with a difference of 0.1.

Let me briefly say, what is compound interest? It is the rolling interest with interest, which is to convert every profit into the investment principal.

2. For example, put 50,000 yuan in the monetary fund for one year, assuming the annualized interest rate is 4. 1%.

If the daily compound interest is calculated, the sum of principal and interest after 1 year = 50000 * (1+4.1%/365) 365 = 52092.49 yuan.

Calculated by monthly compound interest, the sum of principal and interest after 1 year = 50000 * (1+4.1%12)12 = 52088.96 yuan.

Compared with the two, the investment is 50,000 yuan, the term is one year, and the daily compound interest is more than the monthly compound interest in 3.5 yuan.

Three. Content: Yu 'ebao

Suppose 7-day annualized rate of return: 4%

Step: 1. Because Yu 'ebao compound interest daily, calculate the daily rate of return first:

Daily yield = 4% 365 days ≈ 0.005438+009589

The above is the daily yield of Yu 'ebao. If multiplied by 10000, it is a data that we often see on Yu 'ebao: income per 10,000 copies.

2. Substitute into the formula: annual compound interest income = principal× (1+daily rate of return) 365 = principal× (1+0.000109589) 365 = principal×1.0408.

If you have 10000 yuan, according to the daily compound interest calculation, it is not 10400 yuan a year, but 10408 yuan (omitted later).

That is, the annual interest rate is a little over 4.08%.

3. Of course, in fact, because the daily income of Yu 'ebao is unstable, the annual income is not fixed.

4. If you continue to compound interest according to the annual income of 4.08%, your principal will double every 18 years before 18.

Content: five-year fixed deposit in the bank.

Annual interest: 5%

1. Because this interest is fixed at 5% per year, we calculate it on an annual basis.

2. Suppose the principal is 10000 yuan and the annual income is:

10000× (1+0.05) =10500 yuan.

3. 15 income is:

10000× (1+0.05)15 ≈ 20789.28 yuan.

In other words, in about 15 years, your principal can be doubled, and in 30 years, your principal can be quadrupled.