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Accounting · head to head

Billin vs Mercury

Billin logo

Billin

Accounting

Spanish online invoicing software for freelancers and small businesses

From
€6.6/month
Rated
-
Full reviewWebsite
Mercury logo

Mercury

Accounting

Banking for startups

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Mercury has a free tier, so it costs nothing to try first.
  • Each has a real cost: Billin plan Basico caps usage at just 5 clients, 1 user and 10 products for EUR 6.60/month, well below what most active small businesses need; Mercury treasury access requires a $250,000 balance held with Mercury
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Billin and Mercury actually diverge.

Attributes where Billin and Mercury differ
AttributeBillinMercury
Starting price€6.6/monthFree
Pricing modelsubscriptionfreemium
Free tierNoYes
PlatformsWebWeb, Ios, Android
FoundedUnknown2019

Identical on both: user rating (Not yet rated), category (Accounting).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Billin

Nothing recorded that Mercury does not also cover.

Only in Mercury

  • Business checking
  • Savings accounts
  • Virtual cards
  • Team management
  • API access
  • QuickBooks
  • Xero
  • Stripe

What people use each for

The jobs each tool is most often brought in to do.

Billin

  • Invoice managementnot Mercury
  • Multi-user accounting for freelancers and small businessesnot Mercury

Mercury

  • Business banking and payments for startupsnot Billin
  • Managing treasury, invoicing and corporate cards from one accountnot Billin

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Billin

  • Plan Basico caps usage at just 5 clients, 1 user and 10 products for EUR 6.60/month, well below what most active small businesses need
  • Plan Pro still caps clients at 50 and users at 3 for EUR 14/month, so any business with more clients must move to the unlimited EUR 23/month tier

Mercury

  • Treasury access requires a $250,000 balance held with Mercury
  • Non USD international wires carry a 1% conversion fee
  • Choosing OUR wire coding, which covers intermediary bank charges, costs $15 per wire
  • ACH invoicing is $1 per transaction on Mercury Plus and only free on the $299 a month Pro plan
  • Advanced and recurring invoicing require Mercury Plus at $29.90 a month

Pricing, plan by plan

Billin

€6.6/month
  • Plan Básico$80/year
    • 0-5 clients
    • 1 user
    • Max 10 products
  • Plan Básico$96/month
  • Plan Pro$168/year
    • 6-50 clients
    • 3 users
    • Max 50 products
  • Plan Pro$204/month

Mercury

Free
  • Mercury (Free)Free
    • ACH payments
    • Domestic wires
    • Real-time payments
  • Mercury Plus$29.9/month
    • Invoice ACH debits
    • Recurring invoices
    • Invoicing API (500/month)
  • Mercury Pro$299/month
    • All Plus features
    • Relationship manager
    • Free ACH invoice debits

Which should you pick?

Choose Billin if

Nothing in the data separates Billin from Mercury on the points above - pick on price and on how each one feels to use.

Billin review

Choose Mercury if

  • You need business checking.
  • You want to start without paying.
  • You work on Web, Ios, Android.
  • You also want savings accounts.
Mercury review

Questions people ask

Is Billin or Mercury better?
Neither clearly leads. Billin starts at €6.6/month and Mercury at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Billin or Mercury?
Mercury has a free tier; the other does not. Paid plans start at €6.6/month for Billin and Free for Mercury.
Does Billin or Mercury run on more platforms?
Billin runs on Web. Mercury runs on Web, Ios, Android.
Can I use Mercury for free?
Yes. Mercury has a free tier, so you can try it without paying. Billin starts at €6.6/month.
What is Billin best used for?
Billin is most often used for invoice management, multi-user accounting for freelancers and small businesses. Of those, invoice management and multi-user accounting for freelancers and small businesses are not what Mercury is typically brought in for.
What can Billin do that Mercury cannot?
Mercury covers Business checking, Savings accounts, Virtual cards, Team management.

Answered from the vendors’ own pages

Billin: What are Billin's plan costs?

Billin offers three plans: Básico at €80/year (€6.60/month), Pro at €168/year (€14/month), and Ilimitado at €276/year (€23/month). Annual billing includes 18% savings compared to monthly.

Source
Mercury: Is Mercury business banking free?

Mercury's base banking tier is free and includes ACH payments, domestic wire transfers, real-time payments, Bill Pay, and QuickBooks/Xero automations at no monthly cost.

Source
Billin: Is there a free trial for Billin?

Yes, Billin offers a 30-day free trial with all features included. No credit card is required to start.

Source
Mercury: What does Mercury Plus add beyond the free tier?

Mercury Plus costs $29.90 per month and adds invoice ACH debits, recurring invoice capabilities, invoicing API with 500 calls per month, unlimited 1099 filings, and access to partner benefits.

Source
Billin: How many users does each Billin plan include?

Básico includes 1 user, Pro includes 3 users, and Ilimitado includes unlimited users.

Source
Mercury: Does Mercury charge monthly account fees?

No, Mercury states there are no minimum account balance requirements, overdraft fees, required monthly fees, or account opening fees. The free tier includes essential business banking, with paid tiers available for additional features.

Source
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