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Perl/CGI Loan Calculator
7061
Perl/CGI Loan Calculator
http://www.tesol.net/scripts/AffordaBilly
AffordaBilly is a simple interest loan calculator, similar to "VeryInteresting" but focused on determining how large a loan the user can afford, given an interest rate and length of the loan in years. Users can choose monthly or bi-weekly payments. The results will show the maximum amount of a loan that the user can afford based on the monthly payment and interest rate. This is a very simple, yet nice educational tool for showing just how much only 1 or 2% interest can make a difference over the course of time. I think it's cool to have students calculate the loan they can afford with a monthly payment, then have them cut that in half and choose "Bi-Weekly". For example, over the course of a 30-year loan at 7% interest, a Bi-Weekly payment of 325 will let you afford about ,000, whereas a Monthly payment of 650 will only let you afford ,000. Take the interest from 7% to 8% over the same term, and you can only afford about ,000. And students wonder why they should care about interest rates and other math stuff? :-) AffordaBilly is a blatant ripoff of the VeryInteresting payment calculator, also available for download from this site.
CGI and Perl > Scripts and Programs > Financial Tools
Oct 10, 2006
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Other links at CGI and Perl > Scripts and Programs > Financial Tools
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Free Engineering Software Website (FESW). This website has on-line analytical tools and an archive of free PERL programs designed for use on the World Wide Web via the Common Gateway Interface (CGI). These programs are designed to solve mechanical engineering problems in areas such as thermodynamics, fluid mechanics, economics, and units conversions. I have released some of these programs to the public domain in hopes that it will generate interest in the broader use of the web - particularly by engineers. I believe that we as engineers have not yet recognized the full potential that the web offers. Hopefully, this website will offer some glimpse of the possibilities.
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Want code? I'm hosted at sourceforge.net
I'm looking for people to help with making FreePFM a truly secure online finance manager. I've started freepfm-security, a mailing list for discussion of security issues. There is also a forum. If you are interested in helping me with this project me, contact me at mrchrist@users.sourceforge.net.
I've just started freepfm-announce, a low-volume mailing list. I'll use it to announce any changes or service downtimes, so if you're using freepfm, I recommend you join.
FreePFM is a free, web-based personal finance manager written in Perl, using MySQL as a database. It is released under the Gnu Public Licence.
You can see how it works here. Please note that any information you enter is going into a database accessible by me. I will respect your privacy, but the data is there. If you just want to see how it works, try username test, password test.
FreePFM is alpha. Now, it's stable enough that my wife and I use it every day to manage our fianances, but there are many features still I want to add, and much testing to be done before a full release. So use at your own risk, 'cause YMMV.
I have tested FreePFM using Netscape Communicator 4.51 and Mozilla M10, both on Linux. FreePFM requires javascript to function.
I'm looking for people to help with making FreePFM a truly secure online finance manager. I've started freepfm-security, a mailing list for discussion of security issues. There is also a forum. If you are interested in helping me with this project me, contact me at mrchrist@users.sourceforge.net.
I've just started freepfm-announce, a low-volume mailing list. I'll use it to announce any changes or service downtimes, so if you're using freepfm, I recommend you join.
FreePFM is a free, web-based personal finance manager written in Perl, using MySQL as a database. It is released under the Gnu Public Licence.
You can see how it works here. Please note that any information you enter is going into a database accessible by me. I will respect your privacy, but the data is there. If you just want to see how it works, try username test, password test.
FreePFM is alpha. Now, it's stable enough that my wife and I use it every day to manage our fianances, but there are many features still I want to add, and much testing to be done before a full release. So use at your own risk, 'cause YMMV.
I have tested FreePFM using Netscape Communicator 4.51 and Mozilla M10, both on Linux. FreePFM requires javascript to function.
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PayBackTime is a simple perl/CGI interest loan calculator, similar to "VeryInteresting" and "AffordaBilly" but focused on determining how long it will take to pay off a loan or credit card, given a minimum payment, balance, and interest rate. The results will show the time it will take to pay off the balance with that monthly payment, number of payments, and the total interest the user will end up paying. For illustration purposes, it also shows the same data based on a bi-weekly payment of half the amount of the monthly payment. This is another very simple, yet nice educational tool for showing just how much only a few dollars a month can decrease the time to pay off a balance, and for showing just how much you pay for the privilege of using a credit card and paying the minimum payment. Most people simply don't think about how much they're paying, and this is a nice illustration. Students I've shown this to (and not just students, but most people) are often amazed at both the length of time it will take to pay the balance off, and by the amount of interest they will pay. PayBackTime is a blatant ripoff of the VeryInteresting payment calculator, also available for download from this site.
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VeryInteresting is a simple loan calculator. If a user enters a loan amount, an interest rate, the length of a loan, and the payment frequency, the calculator will show the monthly payment and the total interest that will be paid if the loan is paid to term. For monthly payments, it will also show an amortization table. This can be an exciting activity for students studying simple interest, as they can quickly change the number of years a loan is for or the interest rate and see the dramatic differences this makes in both the payment amount and the total amount paid in interest for a loan. If your local currency is not "dollars," you may choose from ?, ?, and ? for the symbol to show after monetary amounts.
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