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A Python 3.8+ loan calculator

Project description

A small Python 3.8+ library that calculates loan payments. Similar to the business loan calculator at


poetry add payulator


Play with the examples in the Jupyter notebook at ipynb/examples.ipynb You can even do so online by clicking the Binder badge above.


  • Alex Raichev, 2018-01-20


On Github Pages here.


3.4.0, 2020-09-30

  • Updated dependencies.

3.3.0, 2019-06-04

  • Added the key periodic_payment to the output of the function summarize_interest_only_loan.
  • Added the keys first_payment_date and last_payment_date to the output of the functions summarize_interest_only_loan and summarize_ammortized_loan.
  • Updated dependencies.

3.2.0, 2019-04-15

  • Added a fee_payment column to payment schedules. It’s debatable whether this is a breaking change. I’ll say no.
  • Added date slicing to the function aggregate_payment_schedules and some cumulative sum columns to the output. It’s debatable whether the latter is a breaking change. I’ll say no.
  • Added more type hints.
  • Published to PyPI.

3.1.0, 2019-02-22

  • Switched to Poetry
  • Switched to Python 3.6
  • Used data class

3.0.0, 2018-03-24

  • Changed function names
  • Added a Loan class

2.0.0, 2018-03-10

  • Changed function names
  • Replaced number of years with number of payments
  • Added a function to compute interest-only loans

1.1.0, 2018-03-03

  • Added the function aggregate_payment_schedules

1.0.0, 2018-01-27

  • First release

Project details

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