Basic rules for correctly filling in bills and settlement vouchers: The data must be standardized and standardized, with complete elements, correct figures, clear handwriting, no leakage, no scribbling and no alteration. Chinese amount in words numbers should be filled in block letters or running scripts, such as one (one), two (two), three (three), four (four), five (five), six (six), seven, eight, nine, ten, one hundred, ten thousand, one hundred million, yuan, angle, and so on. Do not use one, two (two), three, four, five, six, seven, eight, nine, ten, wool, another (or zero) to fill in, and do not create simplified words. If traditional Chinese characters are used in the writing of figures, such as two, six, one hundred million, ten thousand and round, it should also be correct. This answers the question of how to write the annual interest of IOUs for everyone. Also indicate the calculation method of interest.
legal basis: article 67 of the civil code stipulates that the interest on the loan shall not be deducted from the principal in advance. If the interest is deducted from the principal in advance, the loan shall be returned according to the actual loan amount and the interest shall be calculated.
article 671 of the civil code stipulates that if the lender fails to provide the loan according to the agreed date and amount, thus causing losses to the borrower, it shall compensate for the losses. If the borrower fails to collect the loan according to the agreed date and amount, it shall pay interest according to the agreed date and amount.