Tallyfern Rates (Canada)
Read-only Canadian GST/HST rates, small-supplier check and CRA allowance rates, with CRA sources.
Connect it
Settings → Connectors → Add custom connector
URL: https://mcp.tallyfern.com/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://mcp.tallyfern.com/mcp{
"mcpServers": {
"rates": {
"url": "https://mcp.tallyfern.com/mcp"
}
}
}claude mcp add --transport http rates https://mcp.tallyfern.com/mcp{
"servers": {
"rates": {
"type": "http",
"url": "https://mcp.tallyfern.com/mcp"
}
}
}5 tools, verified live
gst_hst_small_supplier_checkread-onlyApply the CRA's $30,000 small-supplier tests (single calendar quarter and four consecutive calendar quarters) to taxable revenue by calendar quarter. Says whether the person must register for the GST/HST, when they stop being a small supplier, the effective date of registration, and headroom for next quarter. Most businesses only (not charities/public service bodies).
gst_hst_rate_by_provinceread-onlyCurrent GST/HST rate for a Canadian province or territory (or all 13), with the PST/QST rate CRA lists for reference. From CRA's 'Charge and collect the GST/HST' table.
cra_automobile_allowance_rateread-onlyCRA reasonable per-kilometre allowance rates for employer-paid vehicle allowances (2026 default; 2025 also available): first 5,000 km and after, provinces vs territories. Optionally calculates the allowance for a number of business kilometres.
cra_meal_travel_allowanceread-onlyCRA simplified-method rates (latest published tax year): flat meal rate per meal and maximum per day, and vehicle cents/km by province or territory where travel begins. These apply to moving expenses, northern residents deductions and medical travel, not to employer per-diems. Optionally calculates amounts.
ontario_hst_basicsread-onlyPlain-language basics for Ontario businesses: the 13% HST rate, the $30,000 small-supplier threshold, the 29-day registration deadline and place-of-supply rule, with CRA sources.
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