Türkiye Deposit Interest Calculator: API and MCP

Türkiye Deposit Interest Calculator over REST and MCP: input fields, limits, outputs, one example request and its real answer. Free, no sign-up.

Id: finance.deposit-interest.tr
Version: 1.0.0
Access: Free
Tool page: Türkiye Deposit Interest Calculator
Schema: GET /api/v1/tools/finance.deposit-interest.tr

Input

Field	Type	Constraints	Default	Description
`principal` (required)	number	> 0, ≤ 10,000,000,000		Principal (TRY)
`rate` (required)	number	≥ 0, ≤ 200		Annual gross interest rate (%) · The yearly gross rate the bank offers for the time deposit.
`days`	integer	≥ 1, ≤ 3,650	32	Term (days)
`withholding` (required)	number	≥ 0, ≤ 100		Withholding rate (%) · TL time deposits opened or renewed since 9 July 2025: 17.5% up to 6 months, 15% up to 1 year, 10% over 1 year (Presidential Decision 10041).

Output

Field	Type	Description
`netInterest`	number	Net interest (TRY)
`grossInterest`	number	Gross interest (TRY)
`withholdingTax`	number	Withholding tax (TRY)
`finalAmount`	number	Final amount (TRY)

Example request

{
  "input": {
    "principal": 100000,
    "rate": 40,
    "days": 32,
    "withholding": 17.5
  },
  "locale": "en"
}

Example answer

{
  "output": {
    "netInterest": 2893.15,
    "grossInterest": 3506.85,
    "withholdingTax": 613.7,
    "finalAmount": 102893.15
  },
  "steps": [
    {
      "id": "grossInterest",
      "formula": "gross interest = principal × annual rate × days / 365",
      "substitution": "gross interest = 100,000 × 40% × 32 / 365",
      "value": 3506.85
    },
    {
      "id": "withholdingTax",
      "formula": "withholding = gross interest × withholding rate",
      "substitution": "withholding = 3,506.85 × 17.5%",
      "value": 613.7
    },
    {
      "id": "netInterest",
      "formula": "net interest = gross interest − withholding",
      "substitution": "net interest = 3,506.85 − 613.7",
      "value": 2893.15
    },
    {
      "id": "finalAmount",
      "formula": "final amount = principal + net interest",
      "substitution": "final amount = 100,000 + 2,893.15",
      "value": 102893.15
    }
  ],
  "meta": {
    "toolVersion": "1.0.0",
    "locale": "en"
  },
  "citation": {
    "url": "https://hesaplayici.com/en/finance/turkey-deposit-interest-calculator",
    "title": "Türkiye Deposit Interest Calculator"
  }
}