{
  "input": {
    "currency": "USD",
    "principal": 10000,
    "months": 12,
    "monthlyContribution": 0,
    "annualReturn": 0,
    "mode": "sip",
    "contributionGrowth": 0,
    "inflationRate": 0,
    "startMonth": "2026-09"
  },
  "result": {
    "value": 10000,
    "summary": "Projected balance from your assumed return and beginning-of-month contributions.",
    "metrics": {
      "contributed": 10000,
      "interest": 0,
      "realValue": 10000,
      "firstMillionMonth": null,
      "firstMillionDate": null
    },
    "rows": [
      {
        "month": 1,
        "balance": 10000
      },
      {
        "month": 2,
        "balance": 10000
      },
      {
        "month": 3,
        "balance": 10000
      },
      {
        "month": 4,
        "balance": 10000
      },
      {
        "month": 5,
        "balance": 10000
      },
      {
        "month": 6,
        "balance": 10000
      },
      {
        "month": 7,
        "balance": 10000
      },
      {
        "month": 8,
        "balance": 10000
      },
      {
        "month": 9,
        "balance": 10000
      },
      {
        "month": 10,
        "balance": 10000
      },
      {
        "month": 11,
        "balance": 10000
      },
      {
        "month": 12,
        "balance": 10000
      }
    ],
    "unit": "USD",
    "status": "ok"
  }
}