Billie vs Mercury
Updated June 2026 · A structured head-to-head comparison.
The verdict
Both Billie and Mercury are credible payment processing tools, and the right pick comes down to your priorities.
Billie - Buy now, pay later for B2B.
Choose Mercury if you'd rather have a lower starting price (free), a free plan to start on and a higher overall rating (4.7/5). Banking built for startups.
Billie vs Mercury: side by side
| Dimension | Billie | Mercury |
|---|---|---|
| Starting price | Custom | FreeWinner |
| Free plan | No | YesWinner |
| Pricing model | Usage-based | Free |
| Best for | B2B Merchants, Ecommerce | Startups |
| Platforms | Web, API | Web, iOS, Android |
| Rating | 4.2/5 | 4.7/5Winner |
Billie key facts
- Vendor
- Billie
- Pricing
- Usage-based - Custom
- Free tier
- No
- Platforms
- Web, API
- Best for
- B2B Merchants, Ecommerce
- Editor rating
- 4.2 / 5
- Founded
- 2016
- Headquarters
- Berlin, Germany
Mercury key facts
- Vendor
- Mercury
- Pricing
- Free - Free
- Free tier
- Yes
- Platforms
- Web, iOS, Android
- Best for
- Startups
- Editor rating
- 4.7 / 5
- Founded
- 2017
- Headquarters
- San Francisco, CA, USA
Frequently asked questions
Is Billie better than Mercury?
Neither is universally better - Mercury edges ahead on overall rating, but the best choice depends on price, platforms, and your use case. See the side-by-side table above.
Is Billie or Mercury cheaper?
Mercury is the more affordable of the two to get started, at free. Billie starts at custom; Mercury starts at free.
Can Billie replace Mercury?
Yes for most teams - both are payment processing tools with heavily overlapping features. The main trade-offs are pricing and platform support, covered in the comparison above.
Side-by-side software breakdowns and pricing changes - in your inbox monthly.