Pricing

Every plan includes every calendar and every endpoint. You only pay for volume.

Need on-prem data, a custom calendar (e.g. your bank's own processing days) or annual invoicing? Talk to us; Enterprise and dataset licences start at $5,000/year.

How usage is counted

Each successful API call or MCP tool call counts as one request; errors and /v1/account don't count. Quotas reset on the 1st of each month (UTC). Paid plans are never cut off: requests beyond your included amount are billed per 1,000 at your plan's overage rate on your next invoice.

What does it cost to build this yourself?

A holiday library is free; keeping it correct isn't. Teams typically spend days building rail-specific rules (Fed Saturday rule, Bacs substitute days, TARGET2 closing days, exchange ad-hoc closures), and then own the on-call when a pinned dependency misses a new holiday. At $19/month Bankday costs less than one engineer-hour.