# Compounding Interest Formula

Dec 10, 2007
I am trying to set up a budget for my self. Of course I am trying to make it as complicated as possible.

I have done searches online and that is how I found this forum. I am finding amortization formulas, but not what I want

Here is my question.

I have two fields, Mortgage and auto loan

I want to have a field that does a calculation for me.

I know following fields as an example making numbers up

Interest rate is fixed at 5.5%

Amount left on loan is 150,000

Loan is fixed at 30 years with 28 years left

I want to run a formula so when I make a monthly payment of 1000 dollars how much of that goes to interest, how much to principle (not to make this complicated even more, but let say that I have 200 escrowed which I am not sure if that has interest calculated on(I don’t think so as it is property tax?))

Same example for car loan.

5 year loan, 4.5% interest, payment 438 a month.

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Feb 20, 2014

If i borrow Rs.50000/- at 7.25% interest compounding monthly, repayable in 4 quarterly instalments, when i put it in excel using pmt function for emi quarterly payment and ipmt for interest calculation at the end of the 4th quarter (i.e last instalment) the balance will not become zero it shows a balance of Rs.14.35 its due to interest compounding monthly, is there any formula in excel to overcome it?

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May 29, 2014

What I am trying to do is to create a formula for the attached spreadsheet - that calculates the daily compounding interest based on the higher rate of the two rates for the first five years then after 5 years the calculation should only be based solely on the blocked rate.

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May 6, 2008

attached the spreadsheet that I need help with in that same thread. Please check out the spreadsheet via: [url]

Here's my issue:

I'm trying to be debt free roughly around 10-11 years years based on my current plan. SO, what I am trying to do is figure out what I can do with my savings at 1, 2, and a 3 % rate of return in a savings account that is compounded monthly after that debt free point. My time frame for results are 5-10-15-and 20 years.

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Jan 26, 2014

I have created a excel sheet here i want the total interest charged for three months in 3rd mnth interest charged column, if i select 7 mnths term total interest charged for 7 months should come in 7th month interest charged colum, if it is 13 months total interest for 12 months in 12th month interest column and remaining 1 month interest in 13th month interest charged column

INTEREST CAL.xlsx

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Sep 5, 2012

I need J22 to multiply based on years in B22 AND increase 5% for each of those years (compounding) after two years (excludes year 1 from 5% increase). In addition the cell needs to remain blank if D22 is blank. B22 = 1, then the stockprice needs to remain the same, and only increase by 5% after year 1.

Currently...

B22 = a number of years indicated by the formula: =IF(A22="","",DATEDIF(A22,I3,"y"))

J22 =IF(ISNA(VLOOKUP(D22,stockprices,2,FALSE)),"",VLOOKUP(D22,stockprices,2,FALSE))

Example:

If J22 stockprice lookup is $1000.00, and the number of years listed in B22 is 6, then the reported value in J22 needs to be $1494.40.

Windows 7 Ultimate / Excel 2010

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Dec 29, 2013

I have a problem calculating a total interest for an input period that has different interest rates. You can see the attached file: INTEREST.xls

I have used a function but the result comes out wrong. Can I fine tune it or do I have to change my method of calculating.

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Nov 18, 2008

I have a person who was paid £1000 pension pa for ten years. I've found out that the pension should have been split 50/50 with half increasing by 5% pa. Thus in year 1 total pension would be £1000. In year 2 the total pension would be £1025 ((£500 x 1.05) plus £500)

I know that in year 10 the total pension should be £500 (non increasing) plus £814 (£500 x 1.05 to the power of ten). My problem is how do I work out a formula which calculates the total arrears due in year ten? I'm thinking the arrears due after the ten years is £314 but something is telling me it's a lot more.

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Aug 24, 2006

I have been raken by brain for a simple formula to calculate an Interest Only Payment on a mortage note, example,

sales price = $162000

term = 360

interest = 8.5

I was able to calculate the payment of principle and interest, but I need to validate what would be an Interest Only payment on this?

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Oct 21, 2009

I use Excel 2007 , I created Interest calculator , on Daily basis , to caluculate interest , compounded quarterly.

But I want to make it compact , as d one I created is long enough.

A3 = Principal Amount

B3 = Date of Investment

C3 = Interest as on Date

D3 = Number of Days , amount Invested {comes out of formula set}

E3 = Rate of Interest

Now in F3 I want the Interest amount , compunded quarterly.

Some times NUMBER OF INVESTED CAN BE LESS THAN 90 DAYS TOO...then what ?

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May 27, 2008

I am currently trying to create an excel spreadsheet where I would know how much interest I will pay in the next six months, since the balance changes every month I am not sure how to formulate the total interest paid with in a specified time period.

I currently can calculate the interest and fill in the below rows with each month but I would like to simplify the report so that I can add the Balance, Rate, Payment(2% of balance), and Time period and in another cell it will tell me how much interest I will pay in that time period. Bascially I would like to keep all the calculations in one row.

For example

Balance | Rate | Payment | Time Period | Interest Paid

$1,000 | 10.00%|$20.00 | 6 | $48.56

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Jan 27, 2007

I am trying to calculate the effective annual interest rate earned on an investment and find the results are close but not really accurate. I suspect because I have not included the frequency of interest in my existing formula

r = n * nt root (A/P-1)

where;

r = the effective interest rate

n = the number of times interest is added per year

t = the total number of years

A = the current value

P = the original value

The 2 problems I face are;

1. Confirming this formula would provide the correct answer (need maths expert here) &

2. How would "nt root" (as in sqr root, but using the product of the years and frequency) be used in Excel

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Feb 4, 2014

I have developed a financial calculator that asks the user for the "input date" which is used to record balances as of the input date. My interest calculation for the first year is based on the current date compared to the input date. For example, if the user is keying in a current balance of 10,000 @ 10% interest, and the "statement date" or "input date" is 12/30/2013, and the current date is today, 2/4/2014, then it should calculate interest for the entire year of 2014. It is not doing that. It calculates $3 interest.

But if input date is 6/30/2013 with current date of 2/4/2014, it seems to work OK. It calculates interest of $504 in that case. It appears to get messed up with the year transition between current date and input date. The formulas I have listed below appear to work fine except when the input date is 2013 for the year and the current date is 2014. The formula does not "see" that input date was last year. There must be a minor tweak to formula I am overlooking.

Cell C2 = Today's Date=TODAY()

Cell C3 = Input date (user keys in date in mm/dd/yyyy format)

Cell E2 = "translate input date to year format" =DATE(YEAR(C3),12,31)-C3

Cell E3 = Investment Rate

Cell G2 = yr 1 interest rate adjusted =(E3/1)*($E$2/365)

Cell C21 = Current Balance

Cell D21 = Interest Yr1 = C21*G2

I need the interest calculation to account for partial year accrual.

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Oct 17, 2009

1. Can I lock particular cell If Yes,How? I want to lock cells which contains formulas.

2. If cell K7 shows 11 I want to see G11 in H9. Same if Cell K7 shows 201 I want to see G201 in H9.

Its a interest calculation sheet where K7 is number of days amount invested and COLUMN G shows interest accured.

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Dec 20, 2011

I would like to have an excel table that has 240 usable lines going horizontal (to the right) and vertical (down) from the starting number.

I need it to compound interest in both directions

240 is the total number of days per year I am trying to track

There should be adjustable starting amounts and compound interest

Be able to adjust the entered amount anywhere along the time line and it recalculate the amount from there on...

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Jul 30, 2006

Cells A1 through A12 contain a series of cash flows:

-100000

-25000

-10000

4000

12000

1000

18000

-4000

12000

10000

15000

95000

In order to calculate the annual IRR the formula should be =IRR(A1:A12)*12). The result is a 25.49% IRR. However, I've seen a formula that calculates the IRR in a different way. In this case, the formula is =(1+IRR(A1:A12))^12-1. In tis case the formula yields a 28.69% IRR. What exactly is the second IRR formula calculating? Is it compounding the monthly returns differently than the first formula? Which calculation is more accurate, and under what conditions would you use the first vs. the second formula (and vice-versa)?

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Mar 3, 2014

In the attached file I have a pivot table created from the data in A:D.

By default the pivot table sums the values for each product (e.g. 18.00 for the sales of Product A). Instead of adding the values for each product I would like to get the pivot table to compound the values for each product. In columns J and K I have shown the results that I would expect when compounding the values of sales and profit for each product. Data for more dates will be added in A:D.

how to achieve this using a pivot table.

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Dec 3, 2005

The file I am working with is available here

(1) I need to work out the value of 2 years worth of interest on a loan - details would be

Loan = 30,180.00

interest = 14.90% pa (calculated daily)

term of loan would be 60 months

I am currently using an ammortisation speadsheet which calculates the interest per month etc ... at this time I simply highlight and calculate the interest which would be two years worth ...

the problem is this calculation varies from the bank interest calculations (although the repayments are the same and the total interest payable amounts are the same)

The banks calculations are said to be done on the basis that the minimum monthly repayment is met and there are no additional fees thrown in ... so I cant understand the difference ...

(2) In addition to the above question, but working on the same loan, traditionally amortisation tables calculate the amount of the repayments, the interest component and the principal component ... some include a column where you can factor in additional repayments on a row by row basis (like the one I am referring to) the table assumes that the payment is made on the due date ...

what I would like to be able to do is

(a) insert the actual payment dates

(b) if no payment is recorded for that period, automatically insert an overdue fee

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Mar 20, 2008

I'm trying to find a formula that will give me the following:

Rent is $2.00 a month with a 3% escalation each year. What is my Rent after 5 years?

Now the other thing is that I need the number of years to be a formula that counts the number of columns with data up to the column with $0.00.

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Apr 28, 2008

I have a macro that formats a spreadsheet to show outstanding invoices, grouped and subtotalled by month. To add to this I need VBA code that will use the subtotals to calculate interest on overdue accounts.

Interest becomes due a calender month after the month in which the invoice is dated. So for example a January invoice would start to accrue interest on 1st March.

Below is the subtotals code (sadly the totals don't adjust if data is added or removed but perhaps that is another question for another day.)

Dim LastRow As Long

Dim NextMonth As String

Dim R As Long

Dim Rng As Range

Dim SubAmount As Currency

Dim ThisMonth As String

Dim TotalAmount As Currency

Dim Wks As Worksheet

Set Wks = Worksheets("Reconciliation")

LastRow = Wks.Cells(Rows.Count, "A").End(xlUp).Row

Set Rng = Wks.Range(Cells(2, "A"), Cells(LastRow, "D"))

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Sep 9, 2009

I have created a template that I use to determine interest calculations (it is based on simple daily interest, but monthly compounding and adjusts for any variations in interest rates during the month), and it seems to work fine so far.

However, I am trying to make it better and would like to eliminate as much manual input as possible. I have attached an example of the template to help explain what I would like to achieve

The Running Balance is dependant on column "J" - Interest for the Month. At the moment, I am manually adding up interest accumulated for the month, however if I add one cell too high or miss a cell when adding, it can lead to compounded problems further down. So in short I am looking for a method that would automatically calculate "interest for the month" by adding all the amounts in column "I" (Interest Daily) at month end for that month only (dates are entered in Column B)

In the attached template, grey areas indicate capital movements and/or interest rate changes that may occur during a month (ie movement in the month in question that affects the daily interest calculated)

I hope I've covered everything!

Any help in this regard comes most appreciated. If anything is unclear, I will do my best to explain what I am trying to achieve in greater detail.

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Aug 6, 2006

I have a column of years and a column of numbers representing annual

amounts placed in a savings account for the year. I would like to calculate

the balance of interest earned added to the balance of the account and then

calculate the interest earned on the accumulating amounts each year. The

results would be the account balance displayed in an adjoining column. So

far, I have not found a worksheet function for that. Could someone point me

in the right direction? Perhaps there should be several columns of data?

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Oct 13, 2011

How can I find the total of interest (or and expense) during a given calendar range

Data is as follows

Date Type Amount

4/1/11 Interest 4.00

4/15/11 charge 22.00

5/1/11 interest 3.00

I want a cell to compute the interest in april only.

I have tried =sumif(range, end date, amount_range)- sumif(range, beg date, amount_range)

but how do I nest the type argument into the argument

Possible approaches advanced filter? and function? add another column that uses an if statement to do interest only and do the sumif statement above I was hoping to have a drop down box that could have interest, COGS, beside it and april, may, june above it

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Mar 6, 2007

Is there a function that calculates what interest rate is needed to turn a $2000 investment into $9000000 in 30 years based on compounding interest?

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Aug 31, 2008

does anyone know how to calculate the interest so it matches this? .......

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Jan 12, 2010

Sample data:

02-06-09 to 18-06-09 earned $2500

19-06-09 to 23-08-09 earned $3500

24-08-09 to 31-12-09 earned $4500

I am thinking if there's a formula that can calculate the interest earned for each month from Jun-09 to Dec-09.

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Dec 1, 2006

I'm an amateur to macro as I'm only in a low level class at a university... But I'm attempting to make a macro for a bank interest calculator. It asks your type of account(which then assigns an interest rate to it), how much money is in the account, and also how long th emoney will be in the account. I used a "Select Case" for the account types, but I seem to be struggling for it to work, it won't put the value of the total into the assigned cell, or it's just not computing it(as I get "0" each time I run it)...

Public Function BankCalculator()

'Bank Calculator for different accounts

'declare variable

Dim shtBank As Workbook, strAct As String, intMon As Integer, strLong As Integer, intTotal As Double

Set shtBank = Application.Workbooks("Bank Calculator.xls")

'input box for amount of money, assign address

intMon = InputBox(prompt:="How much money do you currently have in the account?", _ ......................................

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Jun 30, 2007

I am trying to create a calculator based on a worksheet I have. I do not know how to write a formula for simple interest calculations and for compound interest calculations.

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Jun 29, 2008

I have this sheet at work which contains a bunch of courses my employer runs, alongwith the dates and other details (which spans columns A through O)

Course-rows which require action/follow-up are highlighted with a certain color. The "completed" course-rows have no fill.

Note: the courses requiring action may have a past date, the only distinguishing feature is the highlight color.

Is there any way by which i could generate a pop-up box of some sort which would display the "highlighted" rows (maybe from A through I or something).

I could add 'follow-up' flags on another column if the highlight color won't do.

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Aug 14, 2008

Following is the excel database. B11 is the dropdown menu. When I select the team from drop down menu. it shud give me sorted Name list from B12. I tried the following formula: =IF(INDEX($C3:$E$11,MATCH($C$12,$D3:$D$11,0),2)=$C$12,INDEX($C3:$E$11,MATCH($C$12,$D3:$D$11,0),1)," ")

But it is repeating the name or leaves the cell blank ( which i don't want). When I select Team1 it shud give me Names : a,d,e (without blank cell), Even i tried Array and some vba programmimg but it ...........

ABC

1SrNameTeam

21aTeam 1

32bTeam 2

43cTeam 3

54dTeam 1

65eTeam 1

76fTeam 3

87gTeam 3

98hTeam 4

10

11Team 2

12b

13b

14#N/A

15#N/A

16#N/A

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