Morning,

Has anybody ever come up with a way to discover the a compound interest growth rate based on actual numbers... for example;

Jan05 - 75

Jan06 - 150

Jan07 - 290

Jan08 - 440

I have a long list of investments that I am working on for a colleague, and want to show the growth in interest rate. In addition, I have payment schedules from loans for which I want to do the same, although I imagine the formula will be the same.

Any suggestions?

Cheers,

Paul

Has anybody ever come up with a way to discover the a compound interest growth rate based on actual numbers... for example;

Jan05 - 75

Jan06 - 150

Jan07 - 290

Jan08 - 440

I have a long list of investments that I am working on for a colleague, and want to show the growth in interest rate. In addition, I have payment schedules from loans for which I want to do the same, although I imagine the formula will be the same.

Any suggestions?

Cheers,

Paul

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compound interest on personal savings. I've searched the 'Templates' section

but all appear to be based on loans rather than savings -Maybe I'll have to

edit one of those?

Regards

Graham

I am trying to calculate the interest rate required for a loan of 200,000 with 60 monthly repayments of 6,500 to leave a residual of 60,000.

The rate is approximately 4.88%, calculated by trial and error in a 60 row worksheet, but is there a formula to calculate this figure direct?

Thanks in advance.

Bryan

I have a table that is 24 columns wide (months).

1 row that will have amounts input in to the columns (these will be different amounts)

I want to have a row along the bottom that calulates the compounded interest at a fixed interest rate on the total amount that is in the first row.

i have mnaged to do this using a table but surely there is a formula for this as the table can become very troublesome if the input amounts change.

Ive added an image (attached) to hopefully make this a bit clearer.

Many thanks in advance if you can help you will be saving me days of work

rate (CAGR) starting with an initial amount which grows or shrinks depending

upon the earnings for the year? Is the formula included in the formulae

included in Excel?

That data is in columns:

A: Year

B: Year's average interest rate growth or loss

C: Value of investment, e,g. starting at $1,000 and changing each year by

the rate in column B.

D: The CAGR effective to that year.

Thank you for your assistance.

Pat

Thanks

User Input:

Start_Date =7/17/2007 (Date of Placing a Deposit)

From_Date =7/10/2007(Date from which user wants interest)

To_Date = 10/31/2007(Date till which user wants interest)

Principal_Amount = 50,000 (Amount invested/deposited)

Interest_Rate = 10.25%

Compounding_Frequency = 3 (in months if qtrly then 3, yearly then 12, monthly then 1 & so on)

(Hence in given case first compounding period ends on 10/17/2007)

So the output of the function in above case should be 440.72 (ie when

start date is 7/17/2007), The function which I have created works fine

for above case but when the start date is changed to 4/17/2007

then it fails to give the correct answer, may be my logic is wrong so if anyone figure out correct way then please help me.

Given below is the function which I have created.

VB:Date, Principal_Amount As Double, Interest_Rate As Double, Compounding_Frequency As Integer) 'storing user input in temp variables for ease of reference st_dt = Start_Date fm_dt = From_Date to_dt = To_Date pr_amt = Principal_Amount int_rate = Interest_Rate freq = Compounding_Frequency freq_ctr = 1 'frequency counter for calculating # of completed compounding periods Dim LDM As Date 'for storing Last date of month Dim tmp_dt As Date 'for storing temp values for date Dim tmp_date_2 As Date org_st_dt = st_dt Do LDM = [atpvbaen.xls].EoMonth(st_dt, 0) If [atpvbaen.xls].Edate(org_st_dt, freq * freq_ctr)

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?

Hope this makes sense. It can be difficult to explain complex problems like this in words.

Thanks in advance for any replies.

cheers, Norman

Principal: $120 (user input value)

Duration: 9 (user input value in days, compounding daily)

%Intertest: 4% (user selected value, either 2% or 4%)

Max interest you can earn: $6 (fixed)

Max interest generating money: $150 (variable dependant on %interest, = $150 or $300)

Response/Answer is final value. I don't need the daily results like the example.

Result would be: $170.84

$124.80 (4.80 interest)

$129.79 (4.99)

$134.98 (5.19)

$140.38 (5.40)

$146.00 (5.62)

$151.84 (5.84)

$157.84 (6.00 reached the max interest level)

$163.84 (6.00)

$170.84 (6.00)

my equations I have so far only do one (below 150 total) or the other (above) but not both.

and its just a regular formula: =IF(P

Example: If I start with $45 and in 5 years it grows to $100, what is the

rate it is compounding at?

I have used this since but find my calculations never work out the same as my BS, although to my advantage!

It is =B3*B4/360*DAYS360(B5,B6,TRUE)

Where:

B3=Capital

B4=Interest Rate

B5=Starting Date

B6=Finishing Date

For some reason the formulae uses 360/year and not 365/year.

Using both still gives wrong answer.

If anyone has an answer or a better formulae I would appreciate it.

Many thanks.

I use Excel 2000

This is my first posting, so please be forgiving.

I need to know the most appropriate Excel function for solving a compound interest rate calculation for an unknown interest rate.

For example, $193 = $100*(1+I)^9yrs, solve for I. By trial and error, I know the solution is about 7.6%pa. Which of the many Excel financial or mathematical functions will give this answer.

Thanks

I've found 2 reliable online calculators and I've hard-coded the values for compound interest in the attached excel file. I just need to figure out how to calculate these myself for a project that I'm working on.

Full details are in the attachment.

Thanks in advance for the help!

Thank you very much

Mai

Let's say I start off like this:

January 08 PV= £1000 + 5% interest, Feb 08 PV=£1000+£100 + 5% interest

and so on...I know there is a simple answer, but it is just escaping me at the moment.

Thanks : )

is there a way to calculate an interest rate based on the following info?

A. total interest paid over life of loan

B. total # of months of loan period

C. beginning principal balance

D. Ending balance to be 0, after # of months in B.

Here is my info..

A. 279,017.80

B. 360

C. 200,000

D. 0

I want the answer to come out to 7%..

i'm stumped.

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?

Thanks

calculation.

For example I need to calculated compound interest in the grand total

field. Is this possible?

Suppose 10% return every month (Jan-Dec)compounded monthly.

jan feb mar ... TOTAL

2001 10% 10% 10%... 313.8%

2002 10% 10% 10%... 313.8%

2003 10% 10% 10%... 313.8&

-------------------------------

TOTAL = exp(sum(log(1+n))

ANY HELP IS APPRECAITED!!!!

Any hints would be helpful.

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?

Thanks

compound interest rate over several years based on the interest rate of

a bank.

The first sheet contains 3 columns, StartDate, EndDate, Rate.

The second sheet which will be hidden to the users is for all the

various calculations. There will always be a row for the amount at year

end.

I would like to produce a summary in the third sheet with the interest

and the total amount at end of each year and at the end of the period.

I know I can use pivot table but since it is an Excel template, I

cannot pre-define the criteria. Is there a way to achieve that without

using VBA?

--

RayYeung

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