Bankday vs python-holidays
python-holidays is an excellent MIT-licensed library, and Bankday's country and exchange calendars are built on it. The difference is operational: a library has to be kept current in every service, in one language, while Bankday is one HTTP call from any stack.
| Bankday | python-holidays | |
|---|---|---|
| Price | Free tier, then from $19/month | Free (MIT) |
| Language | Any (HTTP + JSON) | Python only |
| Updates | Central; nothing to redeploy | Upgrade the package in every service |
| Payment-rail calendars (Fed Saturday rule, TARGET2, Bacs) | Yes, verified against operator schedules | Country and some financial calendars; rail rules are yours to build |
| Business-day math, FX spot, ACH settlement | Yes | Not included (pair with numpy or pandas) |
| Works offline | No | Yes |
python-holidays details are from their own site as of October 2026; check there for current terms.
Which should you use?
Use python-holidays for offline Python batch jobs. Use Bankday when several services or languages need the same answers, or you need payment-rail rules out of the box.
Not sure which calendar you need? Read why bank and market holidays differ or try the business days calculator.
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