Questions tagged [calculation]

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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3
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2answers
4k 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 ...
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3answers
19k views

How do you do inflation calculations and estimates?

I'm an engineer, not an accountant so I have no idea what formulas to use (or even the proper terms to google for). I've looked around on a couple of google results, but most of the explanations just ...
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2answers
2k views

What is the effective interest rate on a credit card that offers 0% interest with a 4% balance transfer fee?

I'm about to do a balance transfer that has a fee of 4%. It gives me 0% interest for 14 months. Is it just a straight calculation of 4% for the year or is there another calculation that I need to ...
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3answers
2k views

Dealing with fractions of a penny

If my car insurance was £1200.01 per year, I could end up being charged £100 + 1/12p per month. I know that's not how it works, the extra penny is kept whole and goes on a specific month instead. ...
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3answers
517 views

Rules of thumb for present value of retirement funds given current age and income?

I know the general rule of thumb is you should save 15% of income to retirement, but I'm playing catch-up after years of neglect and contributing 25% until I catch up again. But how will I know when I'...
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1answer
4k views

What does the “SEC 30-Day Yield” mean for a Bond ETF?

I'm currently a student awaiting admission into grad school and have about $10,000 in a Scott Trade account ready to invest. Because I'll be using the money to pay for moving expenses and anything ...
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2answers
414 views

Having trouble with APR calculation

I am using the formula listed on the following site to try to calculate APR: http://www.fdic.gov/regulations/laws/rules/6500-1950.html#fdic6500appendixjtopart226 go to appendix J, if it doesn't auto ...
8
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2answers
267 views

Help understanding credit card interest

I have a credit card with an outstanding balance and I am trying to work out when I will complete paying it off. It is a UK credit card (where I am based) and I do not spend on it. I pay 150 per ...
4
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1answer
1k views

How to determine the interest rate?

I'm really not good at math. So please forgive me for this noob question that I have.. Just trying to learn basic percentage calculation with money lending.. Here's an example of how the APR works. ...
3
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2answers
10k views

Formula for calculating real cost of a deductible expense

Nice round numbers: say I perform a job that gets $1000 gross (call this g) in which I incur $100 in expense (call this e). The expense is fully deductible. Assume my marginal tax rate is 25% (call ...
3
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2answers
624 views

How are minimum payments calculated for auto loans, education loans, etc.

I'm working on a calculator and I have a good handle on Mortgages (amortization) and Credit Cards (daily average, apr, multiply between 3-5%), but I'm not sure how to calculate minimum payments for ...
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1answer
275 views

fixed income calculator

where can I find a fixed income investment calculator? How much income can I expect monthly if I try to live off the interest alone? Are there any penalties for switching investment strategies?
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1answer
594 views

Calculate APR for under 1 year loan

I was talking with a friend about Payday loans (neither of us is getting one, just merely curious) and the APRs they state aren't really true. So, I was trying to figure out an APR based on the ...
2
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1answer
1k views

How to calculate lump sum required to generate desired monthly income?

Suppose my monthly expenses are $500. I want to ask a charity foundation to finance my scientific research by one-time payment intended to cover all my monthly expenses during my lifetime. How to ...
2
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1answer
200 views

How to calculate outstanding Graduate Plus Loan balance currently in deferment?

Can someone tell me what I'm doing wrong here? If I have a $56,500 loan and the interest rate is 7.9% how much will I owe after 8 months? I thought this would be fairly simple. I would compound ...
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3answers
5k views

Is interest of credit cards caculated based on the amount unpaid within the grace period?

From Wikipedia if a user had a $1,000 transaction and repaid it in full within this grace period, there would be no interest charged. If, however, even $1.00 of the total amount remained unpaid,...
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2answers
1k views

Formula for recalculation of a bad loan, i.e. where payments were missed?

I need to know if exists any formula to calculate interest rate, principal interest, total amount to be paid, in the case of a bad loan. Ex: In a bank exists a 20 year home - loan. The client was ...
0
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1answer
298 views

What's the Effective Interest formula used by this loan calculator?

I used a loan calculator which gives an effective rate of 80.781 whereas wikipedia http://en.wikipedia.org/wiki/Annual_percentage_rate gives a rate of 49% for these parameters: borrowed: 100 fees: ...
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2answers
2k views

How much is my annuity worth? Calculating present (commuted) value of an annuity or pension?

I have a lifetime annuity which adjusts with cost of living increases in my state. Is it possible to compute the present value of this annuity? If so, how might I go about that? Perhaps I am ...
4
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1answer
89 views

Should you work out the yield on property or shares against the purchase price, or the current market price?

In What is a good rental yield?, there's some discussion about whether you should calculate yield by dividing the original purchase price, or the current market price. Which is the correct definition,...
11
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2answers
447 views

How do I account for newly added money when computing my rate of return?

I have a simple spreadsheet where I track the balance in my investment account. What should I do to handle new deposits in the account? For example: End of Day 1: balance = $100 End of Day 2: $...
0
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1answer
47 views

Understanding company pension plan monthly purchase of funds

A pension based on funds. What does it mean to add £500 a month to a pension based on funds? Does that mean, I will own an additional £500 worth of that fund each month based on how much of the fund ...
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2answers
284 views

How many stocks will I own in n years if I reinvest my dividends?

Let's say that I own 1000 shares of a stock at 20$. Every quarter, I get a dividend of 0.20$ which is reinvested (buy more of the same stock). Considering that the stock grows 5% annually, how many ...
7
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2answers
1k views

Calculating savings from mortgage interest deduction vs. standard deduction?

I've read just about anything I can find on comparing cash-flow between owning a house versus renting. One new thing popped into my head yesterday, and I can't shake the feeling that it's an obvious ...
3
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2answers
572 views

How is the 6th year on a 5/1 ARM calculated?

Given a 5/1 ARM for a $350,000 loan at a rate of 2.875%: After 5 years of paying at 2.875%, let's say the balance is $310,000. On the 6th year, the first adjustment kicks in an kicks the rate up 1% ...
2
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1answer
364 views

What does “average revenue growth” over multiple periods of time mean?

In particular, given 10 years of revenue data, what is "average revenue growth" understood to mean? The arithmetic average of the 9 yearly growth rates The geometric rate of return Something else No ...
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3answers
3k views

Does financing a portfolio on margin affect the variance of a portfolio?

For example, if the portfolio is financed with 50% margin, does it affect the portfolio variance?
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1answer
1k views

Calculate Income Tax amount of UK Salary

I've recently been trying to calculate different take home amounts from different salaries, and have ended up getting confused over how the different tax brackets work. If I try to calculate the ...
5
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2answers
631 views

How to calculate the market capitalization (fair market value) of the Metropolitan Transportation Authority of New York?

I'd like to calculate the fair market capitalization of the Metropolitan Transportation Authority of New York, or learn how to do so of any comparable public interest corporation (ie an entity without ...
8
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2answers
1k views

Credit card interest calculator with grace period & different interest rate calculation methods?

Is there an (ideally online) credit card interest calculator that includes grace periods and lets you choose the interest calculation method (eg, "adjusted balance", "average daily balance", "two-...
5
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3answers
11k views

How to calculate the rate of return on selling a stock?

How to calculate the rate of return on selling a stock?
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10answers
3k views

Should I pay off the credit cards now or do the monthly payments thing?

I have 3 credit cards with a total balance of about $36k. Two of the cards are at 2% and the last one is at 0%. With the current payment structure, I'll be debt free in 25 months. I recently came ...
3
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3answers
2k views

Discussing stock and stock index movement: clarifying percentage vs. points?

I'm trying to understand more about financial terminology used in news reports, but I'm having a hard time understanding what is meant when someone says the following: "NASDAQ was down X points today ...
2
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1answer
2k views

How is the adjusted family net income calculated for the Ontario Sales Tax Transition Benefit (OSTTB)? What is included in that adjustment?

How is the adjusted family net income calculated for the Ontario Sales Tax Transition Benefit (OSTTB)? What is included in that adjustment?
2
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4answers
8k views

How can I calculate how much tax I will pay

I'm a consultant thinking of taking a full time salary job. I live in WA state and have a family. How can I calculate how much tax (federal, social security, medicare) I will pay? I've used http://...
2
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1answer
252 views

How to arrive at the fee-adjusted APR (accounting for balance transfer fee, but not inflation)?

I'm trying to figure out the fee-adjusted interest rate paid when incurring a balance transfer fee on a loan, not accounting for inflation. If the APR is 4%, the loan 5000, the transfer 2% and you ...
5
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2answers
631 views

Calculating the most optimal way to pay off credit cards

I have 3 credit cards which I am slowly paying them off. Card# Balance Monthly Interest Months to pay of Minimum Payment at current rate Payment 1 $...
4
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2answers
4k views

How to calculate incremental interest rate for home refinancing?

Summary: When you refinance your house and borrow more money, how to calculate the incremental interest rate you pay? I currently owe $95K on my house, 4.75% interest rate, $510 monthly payment (...
4
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4answers
3k views

How to calculate credit card interest with respect to grace period transactions?

If my credit card currently has a $0 balance, and I make a transaction and pay it back within 25 days, I won't pay any interest, even if I had a balance and was paying interest previously. Is that ...
6
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1answer
310 views

If you owe tax, how does the IRS failure-to-file penalty work?

If you owe tax, how does the IRS failure-to-file penalty work?

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