{
  "short": {
    "interest_rate": 0.01,
    "principal": 10000,
    "instalments": 2,
    "type": "annuity",
    "pay_every": "month",
    "invoice_fee": 25,
    "initial_fee": 250
  },
  "long": {
    "type": "annuity",
    "principal": 220000,
    "interest_rate": 0.0545,
    "instalments": 120,
    "pay_every": "month",
    "invoice_fee": 0,
    "initial_fee": 495
  },
  "rounded": {
    "principal": 1,
    "interest_rate": 0.0545,
    "invoice_fee": 1,
    "initial_fee": 1,
    "amortization": 1,
    "interest": 6,
    "to_pay": 56
  },
  "unrounded": {
    "principal": 1.0003,
    "interest_rate": 0.0545,
    "invoice_fee": 1.05,
    "initial_fee": 1.05,
    "amortization": 1.009,
    "interest": 5.5,
    "to_pay": 55.5
  }
}