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Questions tagged [compound-interest]

Compound interest is the result of reinvesting interest so that interest in the next period is then earned on the principal sum plus previously accumulated interest.

166 votes
24 answers
59k views

Why do people save so much?

When I am old and retired (70 years +), I don't plan to spend a lot of money. I'll be living in my own house that is already paid off at that point, so no rent or mortgage payments. Since I don't need ...
cearl's user avatar
  • 1,345
4 votes
1 answer
488 views

Compound interest rate

Given annual interest rate r_ann and n compounds per year, why do we use the formula (1+r_ann/n)^tn rather than (1+r)^tn given r = (1+r_ann)^(1/n) - 1.
Henry Wang's user avatar
4 votes
1 answer
402 views

Future value of a compound-interest savings account when contributions are inflation linked

I've got a savings objective to achieve in 6 years and I'm trying to work out the percentage of salary I need to put towards it to achieve it. I am trying to work out how to calculate the future ...
user714852's user avatar
2 votes
1 answer
255 views

Compound Interest Calculation

In __________ years a sum will double at 5% per annum compound interest. Options given are: a. 15 years 3 months b. 14 years 2 months c. 14 years 3 months d. 15 years 2 months The way to solve ...
JitendraK's user avatar
1 vote
1 answer
182 views

What is the formula for loan payoff with daily compounded interest and annual payment?

I am trying to get the loan repayment amount for below data : Loan Amount: $20,412.65 Payments (#): 10 Annual Interest Rate: 2.5% Loan Date: 07/02/2018 First Payment Due: 09/02/2018 (next payment ...
Vishal's user avatar
  • 11
-2 votes
1 answer
145 views

How to calculate the future expenditure of education :

Suppose the following: if a child's age is 2 years today and he/she will go to college at the age of 15 years for 2 years(duration of education) and for which Cost incurred P.A. as on today (Rs.) ...
user66908's user avatar
61 votes
9 answers
27k views

What are the alternatives to compound interest for a Muslim?

I have read the importance of saving early and the power of compound interest many many times. However I am a Muslim and cannot participate in anything involving interest. I also learned that keeping ...
user avatar
19 votes
2 answers
74k views

How do I calculate monthly compound interest in Google Sheets?

I have a financial spreadsheet with a column of all my deposits into my savings account. The leftmost column lists the dates of the deposits. Now, let's say my savings balance is $100.00 and my ...
grgoelyk's user avatar
  • 301
10 votes
2 answers
3k views

Continuous compounding in practice

A common explanation for the mathematical constant e (2.71828...) is that it is the factor by which an investment would grow at 100% interest rate over a period if it is continuously compounded. In ...
jonallard's user avatar
  • 201
7 votes
6 answers
5k views

Does the growth of home value benefit from compound interest?

I read Investopia's definition and my take away is that compound interest applies to an investment that yields some return on a regular basis and that yield is reinvested in that instrument. If I have ...
Scott Muc's user avatar
  • 263
2 votes
1 answer
331 views

Loan payoff benefit versus raise. Break-even point needed

I have student loans that are under a program that pays off any remaining balance after 10 years of work. I become ineligible for this benefit if I change companies. So, I need to figure out, at what ...
MMc's user avatar
  • 23
2 votes
2 answers
458 views

Effective Interest Rate Interpretation

Assume a $1,000 loan for 24 months, with monthly interest rate 2.5%, and monthly payments ($55.91 as calculated by any online tool, e.g. here). This will give us annual interest rate (air) of 30%, ...
Tomas Greif's user avatar
2 votes
3 answers
1k views

Interest rate question

I'm having a little trouble figuring this out. Suppose I took out a loan with the following terms: Loan Amount: 1,000 Interest Rate (APR): 10% Compound Frequency: Monthly (12 compounding periods) ...
Kiril's user avatar
  • 265
1 vote
2 answers
1k views

Calculating Effective Annual Interest Rate & Annual Percentage Rate with fees (in R)

Problem How to calculate Effective Annual Interest Rate (EAR) and Annual Percentage Rate (APR) with fees (in R) ? I am interested in getting to know how much I am actually paying interest when fees ...
Samuel Saari's user avatar
1 vote
2 answers
789 views

Compound Interest & Mortgages

Mortgages are compounded 2 times a year in Canada and 12 times a year in the USA. However, I read that mortgages are simple interest and not compound interest because you pay the interest for each ...
user7448572's user avatar

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