Softwr

Accounting · head to head

Medius vs TaxJar

Medius logo

Medius

Accounting

Accounts payable automation and supplier payments for mid-market finance teams, Marlin Equity owned

From
On request
Rated
-
Full reviewWebsite
TaxJar logo

TaxJar

Accounting

Sales tax, simplified

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only TaxJar has a free tier, so it costs nothing to try first.
  • Each has a real cost: Medius the sourcing, contract and procurement modules are considerably less developed than the AP core, so buying Medius as a full source-to-pay suite means accepting weak upstream tooling.; TaxJar both published plans include only 200 orders per month, so higher volume costs more
  • They diverge on capability: Medius covers Invoice capture and coding, TaxJar covers Tax calculation.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Medius and TaxJar actually diverge.

Attributes where Medius and TaxJar differ
AttributeMediusTaxJar
Starting priceOn requestFree
Pricing modelquoteusage-based
Free tierNoYes
PlatformsWeb, iOS, AndroidWeb, Api
FoundedUnknown2013

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 Medius

  • Invoice capture and coding
  • Matching and exception handling
  • Fraud and anomaly detection
  • Supplier payments
  • Approval workflow
  • ERP integration

Only in TaxJar

  • Tax calculation
  • AutoFile returns
  • Economic nexus tracking
  • Exemption certificates
  • Multi-channel support
  • Shopify
  • Amazon
  • WooCommerce

What people use each for

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

Medius

  • A mid-market finance team where most spend arrives as an invoice with no purchase order to match againstnot TaxJar
  • A group with several legal entities on different ERPs that wants one AP process across all of themnot TaxJar
  • Reducing invoice fraud exposure with automated detection of supplier bank detail changesnot TaxJar
  • Replacing a scanning bureau and a shared AP inbox with automated capture and exception-based reviewnot TaxJar

TaxJar

  • Calculating US sales tax at checkoutnot Medius
  • Reporting sales tax liability by state and jurisdictionnot Medius
  • Automatically filing state sales tax returnsnot Medius

Where each one falls short

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

Medius

  • The sourcing, contract and procurement modules are considerably less developed than the AP core, so buying Medius as a full source-to-pay suite means accepting weak upstream tooling.
  • Pricing is quote-only and driven by invoice volume, so a business with many low-value invoices pays disproportionately relative to the spend being controlled.
  • Payments are billed on transaction volume separately from the AP subscription, which is easy to omit from a cost comparison against a licence-only AP tool.
  • Private equity ownership since 2017 has produced an acquisition-driven product line, so payments and adjacent capability come from bought-in technology rather than the original platform.
  • ERP integration depth varies sharply by system, and organisations on less common or heavily customised ERPs face integration work that lengthens the implementation.

TaxJar

  • Both published plans include only 200 orders per month, so higher volume costs more
  • The Starter plan at $39 per month allows only 3 data import integrations
  • AutoFile state filings are metered: Starter includes 2 credits a year and each extra filing costs $50, Professional includes 4 and each extra costs $55
  • Real time tax calculation API access requires the Professional plan at $99 per month
  • Phone support, a Customer Success Manager and a dedicated onboarding specialist require the Professional plan
  • The developer sandbox requires the Professional plan
  • The 10% saving requires annual billing

Pricing, plan by plan

Medius

On request
  • Medius AP Automation$undefined/year
    • Two packaged AP automation tiers
    • Priced by invoice volume and entity count
    • Sourcing, contracts and procurement modules sold separately

TaxJar

Free
  • Starter$39/month
    • Up to 200 orders per month
    • 3 data integrations
    • API access included
  • Professional$99/month
    • Up to 200 orders per month
    • 10 total data integrations
    • 10,000 API calls per minute

Which should you pick?

Choose Medius if

  • You need invoice capture and coding.
  • You work on Web, iOS, Android.
  • You also want matching and exception handling.
Medius review

Choose TaxJar if

  • You need tax calculation.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want autofile returns.
TaxJar review

Questions people ask

Is Medius or TaxJar better?
Neither clearly leads. Medius starts at On request and TaxJar at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Medius or TaxJar?
TaxJar has a free tier; the other does not. Paid plans start at On request for Medius and Free for TaxJar.
Does Medius or TaxJar run on more platforms?
Medius runs on Web, iOS, Android. TaxJar runs on Web, Api.
Can I use TaxJar for free?
Yes. TaxJar has a free tier, so you can try it without paying. Medius starts at On request.
What is Medius best used for?
Medius is most often used for a mid-market finance team where most spend arrives as an invoice with no purchase order to match against, a group with several legal entities on different erps that wants one ap process across all of them, reducing invoice fraud exposure with automated detection of supplier bank detail changes, replacing a scanning bureau and a shared ap inbox with automated capture and exception-based review. Of those, a mid-market finance team where most spend arrives as an invoice with no purchase order to match against and a group with several legal entities on different erps that wants one ap process across all of them are not what TaxJar is typically brought in for.
What can Medius do that TaxJar cannot?
Medius covers Invoice capture and coding, Matching and exception handling, Fraud and anomaly detection, Supplier payments. TaxJar covers Tax calculation, AutoFile returns, Economic nexus tracking, Exemption certificates.

Answered from the vendors’ own pages

Medius: Is Medius a procurement suite or an AP tool?

Primarily an AP automation platform with procurement modules attached. If sourcing is your main requirement, look elsewhere.

TaxJar: How much does TaxJar cost?

TaxJar pricing starts at $39/month for Starter and $99/month for Professional. Save 10% or more with annual pricing. A 30-day free trial is available.

Source
Medius: Who owns Medius?

Marlin Equity Partners, which acquired it in 2017 and has funded several bolt-on acquisitions since.

TaxJar: What is the difference between TaxJar Starter and Professional?

Both plans handle up to 200 orders/month, but Professional includes phone support, dedicated success manager, 10 users, and more data integrations and API capacity.

Source
Medius: How is it priced?

By quote, driven by invoice volume and entity count, with payments billed separately on transaction volume.

TaxJar: Does TaxJar offer discounts for annual billing?

Yes, TaxJar saves customers 10% or more when paying annually instead of monthly for both Starter and Professional plans.

Source
Medius: Does it replace our ERP?

No. It sits alongside the ERP and posts approved invoices into it.

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