Name: hledger-interest
Version: 1.0
Synopsis: computes interest for a given account
License: BSD3
License-file: LICENSE
Author: Peter Simons <simons@cryp.to>
Maintainer: Peter Simons <simons@cryp.to>
Homepage: http://github.com/peti/hledger-interest
Category: Finance
Build-type: Simple
Cabal-version: >= 1.6
Description:
hledger-interest is a small command-line utility based on Simon
Michael's hleder library. Its purpose is to compute interest for a
given ledger account. Using command line flags, the program can be
configured to use various schemes for day-counting, such as act/act,
30/360, 30E/360, and 30/360isda. Furthermore, it supports a (small)
number of interest schemes, i.e. annual interest with a fixed rate and
the scheme mandated by the German BGB288 (Basiszins für
Verbrauchergeschäfte). Extending support for other schemes is fairly
easy, but currently requires changing to the source code.
As an example, consider the following loan, stored in a file called
@test.ledger@:
> 2008/09/26 Loan
> Assets:Bank EUR 10000.00
> Liabilities:Loan
>
> 2008/11/27 Payment
> Assets:Bank EUR -3771.12
> Liabilities:Loan
>
> 2009/05/03 Payment
> Assets:Bank EUR -1200.00
> Liabilities:Loan
>
> 2010/12/10 Payment
> Assets:Bank EUR -3700.00
> Liabilities:Loan
Suppose that loan earns 5% interest per year, and payments amortize
interest before amortizing the principal claim, then the resulting
ledger would look like this:
> $ hledger-interest --file=test.ledger --source=Expenses:Interest --target=Liabilities:Loan --30-360 --annual=0.05 Liabilities:Loan
> 2008/09/26 Loan
> Assets:Bank EUR 10000.00
> Liabilities:Loan
>
> 2008/11/27 Payment
> Assets:Bank EUR -3771.12
> Liabilities:Loan
>
> 2008/11/27 5.00% interest for EUR -10000.00 over 61 days
> Liabilities:Loan EUR -84.72
> Expenses:Interest
>
> 2008/12/31 5.00% interest for EUR -6313.60 over 34 days
> Liabilities:Loan EUR -29.81
> Expenses:Interest
>
> 2009/05/03 Payment
> Assets:Bank EUR -1200.00
> Liabilities:Loan
>
> 2009/05/03 5.00% interest for EUR -6343.42 over 123 days
> Liabilities:Loan EUR -108.37
> Expenses:Interest
>
> 2009/12/31 5.00% interest for EUR -5251.78 over 238 days
> Liabilities:Loan EUR -173.60
> Expenses:Interest
>
> 2010/12/10 Payment
> Assets:Bank EUR -3700.00
> Liabilities:Loan
>
> 2010/12/10 5.00% interest for EUR -5425.38 over 340 days
> Liabilities:Loan EUR -256.20
> Expenses:Interest
>
> 2010/12/31 5.00% interest for EUR -1981.58 over 21 days
> Liabilities:Loan EUR -5.78
> Expenses:Interest
Running the utility with @--help@ gives a brief overview over the
available options:
> Usage: hledger-interest [OPTION...] ACCOUNT
> -h --help print this message and exit
> -V --version show version number and exit
> -v --verbose echo input ledger to stdout (default)
> -q --quiet don't echo input ledger to stdout
> --today update account until today
> -f FILE --file=FILE input ledger file
> -s ACCOUNT --source=ACCOUNT interest source account
> -t ACCOUNT --target=ACCOUNT interest target account
> --act use 'act' day counting convention
> --30-360 use '30/360' day counting convention
> --30E-360 use '30E/360' day counting convention
> --30E-360isda use '30E/360isda' day counting convention
> --constant=RATE constant interest rate
> --annual=RATE annual interest rate
> --bgb288 compute interest according to German BGB288
Source-Repository head
Type: git
Location: git://github.com/peti/hledger-interest.git
Executable hledger-interest
Main-is: Main.hs
Build-depends: base >= 3 && < 5, hledger-lib >= 0.14, time, mtl, Cabal
other-modules: Hledger.Interest
Hledger.Interest.DayCountConvention
Hledger.Interest.Rate
Ghc-Options: -Wall