Accounting · head to head
Mercury vs Soldo
Soldo
Accounting
Prepaid company card and spend control platform for European businesses
- From
- £21/month
- Rated
- -
The short version
- Only Mercury has a free tier, so it costs nothing to try first.
- Each has a real cost: Mercury treasury access requires a $250,000 balance held with Mercury; Soldo cards are prepaid, so if the central wallet runs low the cards decline in front of a supplier, and treasury has to keep an idle float funded rather than using a credit line.
- They diverge on capability: Mercury covers Business checking, Soldo covers Prepaid company cards.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Mercury and Soldo actually diverge.
Identical on both: platforms (Web, Ios, Android), 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 Mercury
- Business checking
- Savings accounts
- Virtual cards
- Team management
- API access
- QuickBooks
- Xero
- Stripe
Only in Soldo
- Prepaid company cards
- Card-level budgets
- Receipt capture
- Accounting export
- Multi-currency wallets
- Approval workflows
What people use each for
The jobs each tool is most often brought in to do.
Mercury
- Business banking and payments for startupsnot Soldo
- Managing treasury, invoicing and corporate cards from one accountnot Soldo
Soldo
- A construction firm giving site managers fuel and materials cards with hard per-card limitsnot Mercury
- A marketing team issuing virtual cards per subscription so a cancelled tool cannot keep billingnot Mercury
- A UK company that cannot get approved for a credit-based corporate card programmenot Mercury
- A multi-entity European business needing EUR and GBP wallets without conversion on every purchasenot Mercury
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
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
Soldo
- Cards are prepaid, so if the central wallet runs low the cards decline in front of a supplier, and treasury has to keep an idle float funded rather than using a credit line.
- The plan fee covers only three users, and per-user charges plus physical card fees mean the real monthly cost is several times the advertised headline for a team of twenty.
- It does not extend credit, so it gives no working capital benefit and no card rewards of the kind US charge card issuers use to offset their cost.
- Sole traders and some business types are not accepted, which catches out small consultancies expecting to sign up online.
- Coverage is European; a company with US or Asian subsidiaries will need a second card programme and a second expense workflow for them.
Pricing, plan by plan
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
Soldo
£21/month- Standard$21/month
- Three users included
- Around £7 per additional user per month
- Physical card issuance fee around £5, virtual around £1
- Plus$33/month
- Three users included
- Around £11 per additional user per month
- Advanced approval and multi-currency features
- Enterprise$undefined/month
- Quoted pricing
- Custom card volumes and entity structures
- Dedicated account management
Which should you pick?
Choose Mercury if
- You need business checking.
- You want to start without paying.
- You work on Web, Ios, Android.
- You also want savings accounts.
Choose Soldo if
- You need prepaid company cards.
- You work on Web, iOS, Android.
- You also want card-level budgets.
Questions people ask
- Is Mercury or Soldo better?
- Neither clearly leads. Mercury starts at Free and Soldo at £21/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Mercury or Soldo?
- Mercury has a free tier; the other does not. Paid plans start at Free for Mercury and £21/month for Soldo.
- Does Mercury or Soldo run on more platforms?
- Mercury runs on Web, Ios, Android. Soldo runs on Web, iOS, Android.
- Can I use Mercury for free?
- Yes. Mercury has a free tier, so you can try it without paying. Soldo starts at £21/month.
- What is Mercury best used for?
- Mercury is most often used for business banking and payments for startups, managing treasury, invoicing and corporate cards from one account. Of those, business banking and payments for startups and managing treasury, invoicing and corporate cards from one account are not what Soldo is typically brought in for.
- What can Mercury do that Soldo cannot?
- Mercury covers Business checking, Savings accounts, Virtual cards, Team management. Soldo covers Prepaid company cards, Card-level budgets, Receipt capture, Accounting export.
Answered from the vendors’ own pages
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.
SourceSoldo: Is Soldo a credit card?
No. It is prepaid electronic money. You fund a wallet and cards spend from it, so there is no credit line and no interest-free period.
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.
SourceSoldo: What licence does Soldo hold?
Soldo is authorised as an electronic money institution, including UK, Irish and Italian entities, which is why it can issue cards without a sponsor bank in those markets.
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.
SourceSoldo: What does it really cost for twenty users?
Take the plan fee, add the per-user rate for the seventeen users beyond the included three, then add card issuance fees per physical card.
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