Name: hledger-interest
Version: 1.0
Synopsis: computes interest for a given account
License: BSD3
License-file: LICENSE
Author: Peter Simons
Maintainer: Peter Simons
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 fĂĽr
VerbrauchergeschĂ¤fte). 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