The latest version of hledger-interest is 1.6.6-4.

hledger-interest

Version 1.5.5 revision 0 uploaded by PeterSimons.

Package meta

Synopsis
computes interest for a given account
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 fuer Verbrauchergeschaefte). 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:Bank

2008/11/27 Payment
    Assets:Bank          EUR -3771.12
    Liabilities:Bank

2009/05/03 Payment
    Assets:Bank          EUR -1200.00
    Liabilities:Bank

2010/12/10 Payment
    Assets:Bank          EUR -3700.00
    Liabilities:Bank

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:Bank --30-360 --annual=0.05 Liabilities:Bank
2008/09/26 Loan
    Assets:Bank              EUR  10000.00
    Liabilities:Bank

2008/11/27 Payment
    Assets:Bank              EUR  -3771.12
    Liabilities:Bank

2008/11/27 5.00% interest for EUR -10000.00 over 61 days
    Liabilities:Bank         EUR    -84.72
    Expenses:Interest

2008/12/31 5.00% interest for EUR -6313.60 over 34 days
    Liabilities:Bank         EUR    -29.81
    Expenses:Interest

2009/05/03 Payment
    Assets:Bank              EUR  -1200.00
    Liabilities:Bank

2009/05/03 5.00% interest for EUR -6343.42 over 123 days
    Liabilities:Bank         EUR   -108.37
    Expenses:Interest

2009/12/31 5.00% interest for EUR -5251.78 over 238 days
    Liabilities:Bank         EUR   -173.60
    Expenses:Interest

2010/12/10 Payment
    Assets:Bank              EUR  -3700.00
    Liabilities:Bank

2010/12/10 5.00% interest for EUR -5425.38 over 340 days
    Liabilities:Bank         EUR   -256.20
    Expenses:Interest

2010/12/31 5.00% interest for EUR -1981.58 over 21 days
    Liabilities:Bank         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                     compute interest up until today
  -f FILE     --file=FILE                 input ledger file (pass '-' for stdin)
  -s ACCOUNT  --source=ACCOUNT            interest source account
  -t ACCOUNT  --target=ACCOUNT            interest target account
  -I          --ignore-assertions         ignore any failing balance assertions
              --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-schedule=SCHEDULE  schedule of annual interest rates.
                                          syntax: '[(Date1,Rate1),(Date2,Rate2),...]'
              --annual=RATE               annual interest rate
              --bgb288                    compute interest according to German BGB288
Author
Peter Simons <simons@cryp.to>
Bug reports
n/a
Category
Finance
Copyright
n/a
Homepage
https://github.com/peti/hledger-interest
Maintainer
Peter Simons <simons@cryp.to>
Package URL
n/a
Stability
stable

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