calculate_exchange_rate_margin
Calculate the margin charged on a currency exchange by comparing the bank rate with the mid-market rate to get the cost per 1000 EUR and a rating.
Instructions
Calculate the margin charged on a currency exchange. Returns: {cost_per_1000_eur, rating}. See list_bundles for related 'voyage' calculators.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| bank_rate | Yes | Rate offered by bank/exchange | |
| mid_market_rate | Yes | Mid-market (real) exchange rate |
Output Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| result | No | Computed result. Object whose fields depend on the tool (e.g. {tax, marginal_rate, brackets} for tax tools, {volume_l, gallons} for volume tools). | |
| formula | No | Human-readable formula or method used (e.g. "I=P·r·t", "Magnus formula"). | |
| source | No | Authoritative source for the rule or formula (e.g. "Article 197 CGI", "NF DTU 21"). | |
| reference_url | No | Link to a calcul2 page documenting the calculation in detail. |