Advice 1: How to calculate interest

Sometimes the payment amount is not given as a specific amount, but in the form of some interest. Usually this occurs in cases where the original amount is not known in advance, e.g. a percentage of wages or the cost of goods. To calculate the interest, it is enough to know the interest rate and the amount to which the interest is accrued.
How to calculate interest
You will need
  • calculator, computer
Instruction
1
To calculate interest, multiply the original amount by the percentage and divide the resulting product by one hundred. That is, use the formula:

PU = * KP / 100,

where:

– The amount of which accrued interest payable,
KP – the interest rate
PU – the amount of interest payable.

Example.
Calculate the interest for income tax from a salary of 50000 rubles.

Solution.
As the interest income tax rate is (usually) of 13%, we get:

PU = 50000 * 13 / 100 = 6500 (rubles).
2
If you count the interest you have to constantly, create in Excel a small plate. To do this, write, for example, in cell A1: "Original amount", in cell B1 – "percentage", and C1", the Amount of interest payable". Then write in cell C2 the following formula (you can copy directly from the text):
=A2*B2/100. Now just enter in cell A2 a certain amount, and B2 is the number of percent, in cell C2 will appear ready percentage for payment.
3
If you want to calculate the percentage of payment for the several amounts, then copy the formula located in cell C2 down to the desired number of rows. To do this, move the mouse cursor to the bottom right corner of the cell until it turns into a small plus sign and drag the cursor down the required number of rows.
4
To calculate the interest on the loan, contact the Bank officer in which you intend to apply for a loan. Even knowing all of the formulas and methods of calculation of loan payments, the layman it is practically impossible to consider all nuances in the calculation of interest on its repayment. If you still decide to calculate the interest payable on your own, then use one of the many online credit calculators (for example, http://credcalc.ru/). Just keep in mind that these calculations usually do not take into account additional fees and balloon payments.

Advice 2: How to calculate the interest for the loan

Loans firmly established in the life of each person. They give all the banks and under different interest. It would seem, what could be easier than to calculate the interest on the loan. But when one interest rate for the same amount of credit – you can pay different amount. The amount of the payment depends on what you will be issued a payment – annuity or differentiated.
How to calculate the interest for the loan
Instruction
1
Choosing a loan and the Bank to get it, are you targeting the interest rate on the loan. If one Bank offers a rate of 10% and the other 11%, you of course select the Bank which offers lower interest rate. But even if you took out a loan at the same low percentage, the payout amount can vary.
2
Annuity or equal payments made monthly – payments will be the same throughout the crediting period. When differentiated payments - payments on the outstanding debt, the initial payout amount will be higher than in the first case. In the subsequent payout amount decreases every month and the amount paid for the entire loan will be less. So taking a loan at one interest rate, for the same number of years, the amount of payments is different, as the end result.
3
At differentiated payments the balance of debt is reduced, and therefore reduced interest payments. Accordingly, the full amount of the payments will be lower.
4
In annuity payments, the borrower does not care about percentages and the share which goes to repay the loan. The Bank itself shares paid the amount of the loan on part repayment and interest. Therefore, in the first years of repayment, the proportion of funds that go to the cent higher. At the end of payments most of the money goes to repay the principal amount of the loan. The Bank takes its profit forward. If you decide to repay the loan, the interest taken by the Bank ahead you no return.
5
Therefore, when different types of loan repayment total expenditures for the same percent different. That is, is this math, when 2+2 not always equals 4.
Note
In the market of banking services, you can find a lot of offers for loans and making your choice in favor of one or another Bank, you might want to learn how to calculate the interest on the loan. It is no secret that if the Bank offers a loan at 5 percent, you will have to pay more than at another Bank, and under 12 percent, and just, in the first case, the calculation is always performed on the original loan amount, and the second for the rest.
Useful advice
They differ from each other interest rate on the loan, period of loan, purpose of loan, as well as a number of additional conditions. How is the amount of interest on the loan? You can calculate this percentage using fast but accurate methods of calculating %, which can be used even without a calculator. The 1st method. The fastest and most inaccurate (loan Amount * number of years on the loan) * (% of the loan / 2) + 1 to 8 % of the amount received.

Advice 3: How to calculate a percentage of the amount

The percentage in Latin ("pro centum" means one-hundredth. So if you want to find a certain percentage of a certain amount of money, it means that it is necessary to determine how many hundredths of the sum contains the specified percentage. If in mind to not count it turns out, the easiest way to calculate a percentage using a calculator.
How to calculate a percentage of the amount
Instruction
1
Use to calculate the percentage of a given amount, for example, the standard calculator Windows. Link to his start-up can be found in the main menu system - open it by pressing WIN key or click the mouse on "start" button. You need to go to "All programs" to reveal in this subsection "Standard" and click the string "Calculator." However, hackers are not a fan of "mouse computing" and if you also want to feel like a little hacker, then press the key combination WIN + R, type calc and press Enter. Both run the same Windows calculator.
2
Keep the number ofyour equivalent of the available amount of money. This operation can also be performed with the mouse, and only keyboard - right buttons of the calculator interface duplicate the same keys on the keyboard.
3
Find one hundredth part of the number entered. To do this, use the key with a slash (slash) on the keyboard interface on the screen, and then enter the number 100.
4
Multiply a hundredth of the amount to a known amount of interest. To do this, press on the keyboard or click the mouse on the screen the button with the asterisk, and then type the percentage.
5
Complete the calculation of the percentage of the amount by tapping on the keyboard or clicking on-screen buttons with the sign of equality. The calculator will show you the numeric expression specified percentage of the amount entered.
6
Having access to the Internet for solution of this problem you can do without a calculator. In the network there are many analogues that allow us to make the required calculations directly in the browser window. If there is no time to search for and develop such online services, then enter the desired mathematical expression directly in the query box of Google search engine and immediately get a result. For example, to calculate 13% from the sum of 25 thousand 512 rubles 14 kopecks, enter the following query: "25521,14 / 100 * 13".
Note
How to calculate percentages. In everyday life often need to be able to determine what percentage of a particular number from the integer part. It is a mathematical action that are in high school, could come in handy in the case of the calculation of various loan repayments, calculate ratios for any purchases, and only on the job regularly has to use comparative characteristics, expressed in percent.
Useful advice
How to calculate percentages? 4 APR 2012. Category: Training. No comments. Surely you are not just faced with such a thing as "percentage". And some even required it to count. The first way is to calculate in mind: the Number from which you want to find the percentage you need to divide by one hundred and then multiply by the percentage. Or just multiply the number by the percentage expressed in hundredths (percent divided by one hundred). For example, we need to find 28% of the 924.

Advice 4: How to consider the interest of the Bank

In order to know how to calculate interest Bank loan and loans, you must match three values: the amount of money you borrow, the period for which its going to take, and also the interest rate. Comparing them, we can calculate the interest of the Bank in full. After all, each Bank not only can be different percentages, but also the inclusion of hidden fees on a loan.
How to consider the interest of the Bank
Instruction
1
In order to calculate the interest Bank, you can use a special program "loan calculator", which, as a rule, must be presented on the websites of all major banks of Russia. In this calculator, there are graphs. There enter values: loan amount, interest rate Bank and the loan term. After that, you will instantly receive the result, which will show how much money is needed to pay on the loan and the payment that you will need to make monthly.
2
You can calculate the percent of the Bank independently. To do this, take a pen and a piece of paper. Write the amount of loan money and multiply it by the amount of the interest over the loan term. To the number add one. Then divide the resulting value by 24. Then what you get, and multiply by 100 percent.
3
Banks entice people of different promotional offers to buy any product on credit at favourable terms. However, a detailed consideration of the proposed variant, in fact it may be that all proposals are significantly different from promotional moves.
4
The customer to choose the Bank, which has a small rate of interest is quite clear. One Bank might offer a rate of 10.5%, and the second to 12.5%, but the first Bank has a one-time fee, which is 1% of the loan amount, and a monthly Commission at the rate of 0.1%. The second Bank may not have any fees, but it is necessary to make a single payment in the amount of $ 100. Having considered these two proposals, it turns out that the costs of the loan more, whose interest rate is lower, but a lot more payments.
5
Not to get into such a situation, it is necessary to calculate what costs are waiting for you actually. To do this, fold down the interest rate with all additional fees, then you will be able to get a real "effective" interest rate.

Advice 5: As interest is accrued on the loan

In the world practice offers financial institutions today are simply full of a wide variety of loans for various purposes, terms, and rates. Before the final choice of the institution for credit, you must clearly know and be able to test the process of calculating interest on the loan.
The percentage and all the details of its calculation
You will need
  • - credit agreement;
  • calculator;
  • - Excel
Instruction
1
Take the loan agreement and find the paragraph on the rules of calculation of the interest on the loan. As a rule, the payment schedule is of two types: classic and annuity. Classic graph assumes interest payments in the amount of the monthly body of the loan and every month payment is reduced by a certain amount. Annuity schedule is payment of interest and each month the same amounts that do not change until the end of the loan period.
2
Find it in the contract the initial amount of the loan, term in months, if specified in years, turn, multiplied by 12 and the annual rate in percent. Check all associated one-time and monthly Commission according to the text of the Treaty. If the loan the Bank required collateral to insure — write the amount of payment for insurance.
3
Now, to calculate the repayment of classical type take a calculator, sheet of paper and then calculate by the formula: interest = (total loan amount) / (loan term in months) x (annual interest rate) / 365 x (30 or 31 [days, months]). You will get the payment on the interest for the first month. To calculate each subsequent payment should initial the amount of change in the balance of the loan. The monthly payment on the loan is even easier: monthly payment = (loan amount) / (loan term in months). Total monthly payment = (monthly payment body) + (interest).
4
Schedule for an annuity is calculated is more complicated. It is better to use the program Excel to not tormented with the calculations manually. Open the Excel sheet and in any cell put = and then select the PMT function. For example, your loan is 100 000,00 R., at 24% per annum for 60 months, enter in the popup list of the following values:
the type of data to formulas in Excel
5
Press "OK" and you will receive your monthly annuity payment. If you enter manually it would look like the following:
=PMT (24%/12; 60; -100000). In brackets enter the indicators of need in the following order: interest rate, number of months loan, the initial amount of the debt. A minus in front of 100 000 means the obligations of duty, if not to deliver the final value will simply be negative.
6
To understand the full amount of the overpayment on the loan it is possible to calculate so-called effective rate. Effective interest rate = ([loan + interest for the entire period + Commission] / loan term in years) / average loan amount. Average loan amount: loan amount x (loan term in months + 1) / (2 *term of loan in months). In the end, you find out how much really is the real interest rate on the loan.
Note
Note that any value set monthly fee on the loan (from initial amount or balance); is there any fee for early repayment of the loan;
Useful advice
Be sure to choose the Bank in which interest on the loan is happening in the rest of the body, and not on the initial amount.

Before election of annuity schedule check if there are any penalties for early repayment.
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