A generic tag to understand the calculations in a specific case. Please give out a sample illustration and ask a specific question. Ideally should also be accompanied by specific subject tags like "credit-cards", "savings-account", "index-funds" etc.

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12 views

How should I include pension contributions in my UK Child Benefit calculations?

I'm using the gov.uk Child Benefit Tax Calculator and I don't know how I include my pension contributions in the "Pension contributions deducted from your pay" and "Pension contributions not paid from ...
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3answers
41 views

Personal Loan issuer online service

I have chunk of money that I would like to loan to my brother. I would like to charge him interest same as banks do. Is there a website or online service where I can enter the "loan" amount, ...
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3answers
85 views

What is the meaning of “$N industry”?

For example, in the sentence "Semiconductor fabrication is a $100 billion industry.", what exactly is being said?
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1answer
41 views

How to calculate forward price for asset with dividend?

I have this exercise question: A particular forward contract costs nothing to enter into at time t and obliges the holder to buy the asset for an amount F at expiry T. The asset pays a dividend DS at ...
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1answer
44 views

Google Finance: Input Parameters For Simple Moving Averages

I'm having some trouble understanding the simple moving average lines that can be added to a quote graph from Google finance. This related Stack Exchange question indicates that the only input ...
2
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2answers
107 views

How to calculate ROI on investments? [duplicate]

I looked through the previous questions, and couldn't find one that quite addresses my question. If I start with $1000, and through investing it goes to $1200(100 shares at $10 go to $12), I can say I ...
3
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2answers
111 views

How can I calculate (approximate) the future value of my investments? Is this formula appropriate?

I want to check to see if I'm meeting my investment goals, so I want to project forward my assets given a growth rate and a monthly deposit amount. What is the best formula to use for this? Is this ...
5
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2answers
97 views

Am I doing the math for this covered call/long put strategy correctly? What risks do I run with this strategy?

In this trade, I write an in-the-money covered call and buy an in-the-money put (as an example) on GM, expiring in September 2014. The call premium is $10.02 with a strike of $26, and the put premium ...
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1answer
53 views

How can I check if my mortgage balance is correct?

Since I couldn't easily get my unpaid principal balance, I calculated my mortgage balance using a handful of online calculators. Today I took a look at the actual balance, and was rather surprised to ...
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1answer
45 views

Reasonable alternatives to using the Treasury rate as the risk free rate, e.g. for CAPM calculation?

For all practical purposes, the risk free interest rate is taken to be the short term Treasury bill interest rate. Let's say this rate is 0.5% per annum. But for an individual investor, if his bank ...
2
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2answers
173 views

When to use geometric vs. arithmetic mean? Why is the former better for percentages?

While computing the average price of a stock or index over a period of time, I have the choice between using an arithmetic mean or a geometric mean. Which should I use and when? I am reading a book ...
3
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1answer
112 views

How to determine withholding so at end of the year I neither owe more, nor get a refund?

A while back I was on a W2 job and I would get a large sum on my tax return. At one point I found a calculator that helped me figure out how to configure my W4 so that I would neither owe nor be owed ...
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3answers
469 views

What is the “rule of 70” or “rule of 72” with regards to investment, and how do I apply it?

What is the "rule of 72" (sometimes called the "rule of 70") with regards to investment, and how do I apply it?
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1answer
94 views

How to calculate how far a stock price can drop before a broker would issue a margin call?

Let's say the margin requirement for a stock XYZ is 50%. The current price of XYZ is $150/share. Let us say I put in $100, and borrow $50 from the broker to buy a share. Typically, how far can the ...
2
votes
2answers
91 views

How to calculate whether it's better to pay my education loan, or my home investment loan?

I have an education loan @ 11.5 % for 1,000,000. I can pay it in 3 years. I am planning to make an investment by buying a home @ 10.5% for 2,200,000. Term = 20 yrs. I am thinking if I sell the house ...
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2answers
74 views

Suppose earning an APR of 7% for 5 years, with interest compounded quarterly. What is the EAR? What is the Total Return?

Suppose you earn an APR of 7% for 5 years, with interest compounded quarterly. What is your EAR? What is your Total Return? The part I am confused is "with interest compounded quarterly" The ...
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2answers
112 views

Calculating accumulated value of an annuity with changing payments?

In a series of 40 payments the first 10 payments are 10 each, the second 10 payments are 20 each, the third 10 payments are 30 each, and the final 10 payments are 40 each. The payments are equally ...
2
votes
1answer
97 views

Am I doing the math for this long straddle strategy correctly?

I'm looking at making a long straddle trade, and I'm trying to make sure I have the math correct before making the trade. Here are the details in the example I want to work out: I'm using options on ...
4
votes
3answers
92 views

How can I calculate yearly interest of my investment gain?

I'm trying to figure out the yearly interest of a potential investment. Lets say I invested $10 000, 13 days later i cash out and I now have $10 500. The interest here is 4,76% for 13 days. But can I ...
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1answer
36 views

When performing wash sale calculations does time of day matter?

For wash sales, I've read there is a 30-day window both before and after an opening trade during which a loss from a closing trade becomes a wash sale with respect to the opening trade's cost basis ...
1
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0answers
63 views

What are the standard industry practices or disclosures for computing compounded interest on retail deposit accounts in the United States?

I'm seeking to understand how my bank calculates the interest on my various deposit accounts (Money Market, Interest Checking, Savings, Certificate of Deposit) in order to simulate and predict it to a ...
3
votes
3answers
140 views

I'm a programmer and need a formula for calculating overal ROI [duplicate]

I'm programming a web app to track my hedge fund performance. I'd like to find my overall ROI for all time. If I had a beginning balance and my current balance then finding the ROI is easy. For ...
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2answers
217 views

Choosing between two car deals on the same car - NPV

This is basic question, but I have starred myself blind on it - I am stuck. I am not sure which formulae I should use. Here is the story. I am looking to buy a car. I have found two dealerships ...
2
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2answers
159 views

How does this retirement fund calculator work?

I found a retirement fund calculator on web: Inflation rate: 2% 0% 2% 0% Expected return rate: 5% 0% 0% ...
3
votes
1answer
122 views

IRS returns more money than my calculation - how can I find out where I was wrong?

A couple of months ago I filed the 2012 tax returns. I was expecting a few thousands USD for a refund. Finally, the payment was received in my bank account, and I noticed that the actual refund was ...
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4answers
1k views

What's the formula to calculate the monthly or lump-sum investment amount for a desired future value?

Give the following values: Inflation Rate 2% Expected Return Rate 5% Future Value 1,000,000 monetary units Years to Target - 10 What is the formula to calculate the amount of? Lumpsum investment ...
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2answers
70 views

Why is that we discount all the coupons and par amount of a bond at the same rate?

Why is that we discount all the coupons and par amount of a bond at the same rate, our YTM? If we think of each coupon/par as a strip/single bond on its own, wouldn't then each coupon payment be ...
3
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2answers
154 views

Need a formula to determine monthly payments received at time t if I'm reinvesting my returns

I need a formula for how much money I will be receiving monthly and how much I will have in total for any time t (in months). The following is my scenario: I will be investing $900 monthly into a 3 ...
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2answers
256 views

How to calculate Social Security benefits if retiring before the early Social Security age?

How can I calculate my Social Security if I retire before my early Social Security age? I tried to use the official website's calculator, but it required entering too much data, and the website ...
3
votes
1answer
650 views

How to calculate the closing price percentage change for a stock?

When viewing a stock on Yahoo Finance: ...
1
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1answer
88 views

What is the formula for the Tesla Finance calculation?

According to http://www.teslamotors.com/true-cost-of-ownership with the fields set to a rate of 3.3%, down payment 10% over a 72 month term, it calculates this to be $980/mo. How did they get there? ...
2
votes
1answer
88 views

Annuities question - Equations of value

Chuck needs to purchase an item in 10 years. The item costs 200 today, but its price inflates at 4% per year. To finance the purchase, Chuck deposits 20 into an account at the beginning of each ...
2
votes
1answer
130 views

If I lose 20%, what rate of return do I need to break even?

If the account is down 20%, what rate of return over the next year do we need to get to be even, in other words make back the 20% we lost? The rate of inflation in this case is zero.
2
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2answers
99 views

Method for calculating the wisest amount of liability to purchase for car & home insurance?

I've seen the advice to get enough liability insurance as you have in total assets, i.e. if your owned home, owned car & savings = $100,000, then get $100,000 liability coverage. What is the ...
2
votes
1answer
766 views

How do you calculate the P/E ratio by industry?

I would like to know how to calculate the P/E ratio by industry. On this website, it displays the P/E ratio for the current stock, the industry and the sector: FINANCIALS DTV.O ...
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1answer
100 views

Calculating required rate of return for an income-generating savings account

Say someone has £1m. They want it to generate an increasing level of income, starting from £25k in year 1, and increasing at a rate 7% + inflation pa, such that the end value of the savings after 20 ...
2
votes
1answer
531 views

How to determine the final value of a U.S. Savings Bond at maturity?

Is it possible to determine the "final" value of a U.S. Savings Bond on its maturity date? The interest rate is fixed, the compounding periods are known (semi-annually for EE bonds), and the term is ...
3
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3answers
375 views

Negative properties of continuously compounded returns

I'm taking an intro to quant finance course online. I'm trying to better understand the properties and uses of continuously compounded returns. Specifically for this question, how can you have ...
0
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1answer
113 views

How do I calculate sales tax to many items? [duplicate]

I'm wondering how to calculate sales tax when this situation. Item price is 14.97 and quantity is 7. Sales tax is 9%. 14.97 * 7 * 0.09 = 9.4311 = 9.43 14.97 * 0.09 = 1.3473, rounding up: 1.35 * 7 = ...
2
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3answers
159 views

What is the optimal way to calculate tax: apply tax to each item, then sum the prices, or sum the prices, then apply tax? When are prices rounded?

What is the optimal way to calculate tax? Lets say tax is 7.5% or 0.075. $2.32 X 1.075 = 2.494 --> Rounded: $2.50 You can say that item is $2.50 (tax included) and if you have two items: ...
0
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0answers
42 views

How do I account for deposits and withdrawals when measuring cumulative daily returns? [duplicate]

I think this works best as an example. Let's say I start with $100 and trade for five days. Equity is how much money I have, c. ret represents cumulative returns, and d/w means deposits/withdrawals. ...
5
votes
3answers
726 views

In the event of a corporate spin-off, how can I calculate the correct cost basis for each company's shares?

Consider this example: Siemens is going to have a spin-off (next Monday). If I owned, say, 10,000 shares of Siemens bought at an average price of 80 euros, my cost would be 800,000 euros. In the ...
2
votes
2answers
610 views

How to calculate dividend yield for the Dow Jones Industrial Average (DJIA) index?

This should be fairly straightforward. How do I calculate the dividend yield myself for the Dow 30 / Dow Jones Industrial Average (DJIA)? I'm thinking I just add the last dividend for all the ...
3
votes
3answers
105 views

What is the theory behind Rick Van Ness's risk calculation in the video about diversification?

In the video, Rick Van Ness states the following scenario: Stock A has a 7% return with +/- 1% risk Stock B has a 3.5% return with +/- 0.5% risk Stock A and B are perfectly negatively correlated. ...
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1answer
484 views

How do I calculate the total return on a bond series given its yields?

How do I calculate the total return on a bond series given its yields? Is there an equation? I looked at this Investopedia article, but it only refers to stocks in general.
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2answers
348 views

Why does the calculation for percentage profit vary based on whether a position is short vs. long?

In this link here, the point: In a market in which upswings are likely to equal or exceed downswings, heavier position should be taken for the upswings for percentage reasons - a decline from ...
10
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2answers
803 views

Is there a term that better describes a compound annual growth rate (CAGR) when it is negative?

When calculating rates of return for an investment or portfolio over time, whether to report or compare performance, one frequently calculates the Compound Annual Growth Rate (CAGR). I've got a ...
5
votes
1answer
103 views

Comparing pre-tax versus post-tax health expenses?

I understand the concepts from this question and everything I have read says that the benefit of pre-tax expenses are that they reduce your taxable income. But to keep the math simple, let's say ...
3
votes
2answers
689 views

Calculating Profit Ratio (Gross Margin)

When looking at a company's income statement to calculate the Profit Ratio (Gross Margin) PM = Net Profit / Sales Do you include "other" revenue in the equation? Example: XYZ Ltd Income Statement ...
2
votes
1answer
147 views

How do I calculate the interest on my deposits to my landlord?

I was renting from this company called harbor house builders. I started renting from them in 2009 and at that time I was renting an apartment at 650 a month so I put 650 for rent and 650 for deposit. ...