# hledger-interest: computes interest for a given account

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 changes 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

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Versions | 1.0, 1.1, 1.2, 1.3, 1.4, 1.4.1, 1.4.2, 1.4.3, 1.4.4, 1.5, 1.5.1 |
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Dependencies | base (>=3 && <5), Cabal, hledger-lib (==0.18.*), mtl, time [details] |

License | BSD-3-Clause |

Author | Peter Simons <simons@cryp.to> |

Maintainer | Peter Simons <simons@cryp.to> |

Revised | Revision 1 made by PeterSimons at Mon Oct 31 07:18:14 UTC 2016 |

Category | Finance |

Home page | http://github.com/peti/hledger-interest |

Source repo | head: git clone git://github.com/peti/hledger-interest.git |

Uploaded | by PeterSimons at Tue May 29 20:40:28 UTC 2012 |

Distributions | Debian:1.4.4, LTSHaskell:1.5.1, NixOS:1.5.1, Stackage:1.5.1, openSUSE:1.5.1 |

Executables | hledger-interest |

Downloads | 4567 total (27 in the last 30 days) |

Rating | (no votes yet) [estimated by rule of succession] |

Your Rating | |

Status | Docs not available [build log] All reported builds failed as of 2016-11-18 [all 7 reports] Hackage Matrix CI |

## Downloads

- hledger-interest-1.4.1.tar.gz [browse] (Cabal source package)
- Package description (revised from the package)

Note: This package has metadata revisions in the cabal description newer than included in the tarball. To unpack the package including the revisions, use 'cabal get'.