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Pure math investment primitiveFREE

Investment Growth Calculator

Project compound interest growth with periodic contributions. Supports compound and simple interest, multiple compounding frequencies.

Try endpoint

Endpoints

  • POST /invest/calculate

Parameters

principalannual_rateyearscontribution_monthlycontribution_frequencyinterest_typecompounding_frequency

Example request

curl -X POST 'https://bountyapi.com/invest/calculate' -H 'content-type: application/json' -d '{"principal":10000,"annual_rate":7,"years":10}'

Example response

{
  "final_balance": 20096.61,
  "total_interest_earned": 10096.61,
  "multiplier": 2.01
}

Source

Calculated from standard compound interest formulas. No external data dependency.

Limitations

Monthly compounding by default. Supports annual, quarterly, daily, and continuous compounding.