Savings goal calculator API

Solve the monthly contribution to hit a goal by a deadline with monthly compounding using the future-value-of-annuity formula pmt=(FV-PV*(1+r)^n)*r/((1+r)^n-1). Answers 'how much to save monthly for $10000 in 24 months', 'monthly savings to reach a goal at 4% interest', 'will my current savings already get there'.

Price$0.01per request

MethodPOST

Route/v1/calc/budget-savings-goal

StatusLive

MIME typeapplication/json

Rate limit120/minute

CacheNo cache

budgetsavingsgoalannuitycompoundinterestcalculatormoney

API URLhttps://x402.hexl.dev/v1/calc/budget-savings-goal

Integration docs

Example request

{
  "goalAmount": 10000,
  "months": 24,
  "currentSavings": 1000,
  "annualRatePercent": 4
}

Example response

{
  "goalAmount": 10000,
  "months": 24,
  "currentSavings": 1000,
  "annualRatePercent": 4,
  "monthlyContribution": 357.49,
  "projectedGrowthOnCurrent": 83.14,
  "totalContributed": 9579.78,
  "interestEarned": 420.22,
  "alreadyMet": false
}

Input schema

{
  "type": "object",
  "required": [
    "goalAmount",
    "months"
  ],
  "properties": {
    "goalAmount": {
      "type": "number",
      "description": "Target amount in dollars",
      "examples": [
        10000
      ]
    },
    "months": {
      "type": "number",
      "description": "Months until the deadline",
      "examples": [
        24
      ]
    },
    "currentSavings": {
      "type": "number",
      "description": "Current savings in dollars",
      "examples": [
        1000
      ]
    },
    "annualRatePercent": {
      "type": "number",
      "description": "Annual interest rate percent",
      "examples": [
        4
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}