Quaderno vs Taxually for Cross-Border Sellers 2026

Quaderno and Taxually are more complementary than competitive — they operate at different layers of the compliance stack. Quaderno is a real-time tax calculation and automation platform: it calculates VAT and sales tax at checkout, generates compliant invoices, and produces structured filing reports. Taxually is a compliance and filing service: it is a licensed UK VAT agent and registered IOSS intermediary that takes your sales data and actually submits the returns to tax authorities.

For many UK cross-border sellers, the right answer is to use both — Quaderno at checkout, Taxually for filing. But sellers who want a single vendor, or who already have checkout calculation handled elsewhere, will want to understand exactly where each tool begins and ends.

1. Local VAT / Sales Tax Filing

Quaderno: Does not submit UK VAT returns directly to HMRC via MTD. Quaderno calculates UK VAT across all connected channels and generates a structured UK VAT report. That report is designed to import into Xero, QuickBooks, or FreeAgent for the MTD submission. Quaderno integrates directly with Xero, reducing the manual work, but the filing step itself sits outside Quaderno.

Taxually: A licensed UK VAT agent that files MTD returns on your behalf. Taxually imports your sales data from connected platforms, prepares the return, and submits directly to HMRC. For sellers who want to fully outsource the compliance obligation, Taxually closes the loop.

Verdict: Taxually wins on filing capability — it handles the submission step that Quaderno stops short of. Quaderno provides the structured data that makes it easy to feed into either Taxually or your own accounting software.

2. EU IOSS

Quaderno: Supports IOSS calculation natively across connected platforms. Configure your IOSS number and Quaderno applies destination-country VAT rates to EU shipments under €150, generating a monthly IOSS report aggregating data from all channels. Quaderno is not an IOSS intermediary and does not file the return.

Taxually: Acts as your registered IOSS intermediary. Taxually takes legal responsibility for your IOSS registration, aggregates sales data from connected channels, and files the monthly return. It does not calculate the tax at checkout — if your store doesn’t already have an IOSS-aware checkout calculator, you need one alongside Taxually.

Verdict: They solve different halves of the problem. Quaderno calculates IOSS VAT at checkout and produces the monthly report. Taxually files the return and fulfils the intermediary obligation. For the full IOSS solution, you need both — or Quaderno paired with a different intermediary, or a different checkout tool paired with Taxually.

3. EU OSS

Quaderno: Full OSS support covering Union and Non-Union schemes. For UK businesses selling digital services to EU consumers (Non-Union OSS), Quaderno applies correct destination-country rates and produces a quarterly return formatted for EU portal filing. Quaderno also offers managed OSS filing as an add-on service.

Taxually: Specialises in OSS filing. Taxually manages the OSS registration, pulls in the data, and submits the quarterly return across the EU. It covers both Union and Non-Union schemes and its core value on OSS is end-to-end managed service — registration, data aggregation, return preparation, and submission.

Verdict: Both cover OSS. The difference is that Quaderno handles the calculation layer that Taxually lacks at checkout. For the filing layer, Taxually is the specialist; Quaderno’s managed filing add-on brings it to parity on submissions specifically.

4. US Sales Tax

Quaderno: Covers US sales tax — automatic calculation once nexus states are configured, threshold monitoring across all states, state-level reporting, and managed filing as an add-on service. Appropriate for most SMB e-commerce sellers with US exposure.

Taxually: No US sales tax support whatsoever. Taxually is strictly focused on European and UK VAT regimes. If your business sells to US customers, Taxually cannot help.

Verdict: Quaderno wins clearly. For UK sellers who sell to both EU and US customers — the most common cross-border profile — Quaderno covers both sides; Taxually covers only Europe.

5. VAT Calculation at Checkout

Quaderno: Calculates VAT and sales tax in real time at checkout across all connected platforms and payment processors — Shopify, WooCommerce, Stripe, PayPal, GoCardless, and others. Not constrained to a single payment method. Also generates compliant VAT invoices automatically for every transaction, satisfying B2B invoice requirements across the EU and UK.

Taxually: Does not perform checkout calculation. Taxually aggregates historical sales data for filing purposes — it does not sit in the checkout flow and does not determine tax at the point of sale. Sellers using Taxually for filing must have checkout tax calculation handled by another tool.

Verdict: Quaderno wins outright. Checkout calculation is a core Quaderno function; Taxually does not offer it.

6. Platform Integrations

Quaderno:

Shopify — native app, payment-processor-agnostic
WooCommerce — native plugin (Classic Checkout)
Stripe, PayPal, Braintree, GoCardless, Square — direct payment processor integrations
Amazon FBA — transaction import
Xero — direct integration for VAT data handoff
Kajabi, Teachable, Thinkific — digital product platforms

Taxually:

Shopify, WooCommerce — data import for filing
Amazon, eBay, Etsy — marketplace data aggregation
Stripe — transaction import
Xero, QuickBooks — accounting integrations

Taxually’s integrations are built for pulling sales history into its filing system, not sitting in the live checkout flow.

Verdict: Quaderno integrates more deeply at the transaction and checkout level. Taxually’s integrations are equally functional for data aggregation. The relevant distinction is purpose: Quaderno integrates for calculation; Taxually integrates for filing.

7. Pricing Model

Quaderno: Flat monthly fee based on transaction volume:

Plan	Monthly fee	Transactions included
Startup	$49/month	250
Business	$99/month	1,000
Growth	$149/month	2,500
Enterprise	Custom	2,500+

All plans include unlimited platform integrations, automatic invoicing, and all supported jurisdictions. Managed filing services are available as an add-on.

Taxually: Subscription-based, typically around €49–99/month depending on required services (IOSS intermediary, OSS, UK MTD) and transaction volume. As a regulated filing and agency service, Taxually’s pricing reflects compliance work performed on your behalf — legal registration, regulatory submissions, and ongoing correspondence with tax authorities.

Verdict: Both sit in a similar price range. Quaderno’s fee covers calculation, invoicing, and reporting across EU and US. Taxually’s fee covers actual filing services, legal intermediary duties, and regulatory submissions. Running both in tandem is a reasonable combined spend for a seller with meaningful EU volume.

8. Setup Complexity

Quaderno: Low. Designed for self-serve use, with a personalised onboarding call for all new accounts. Most users configure platforms, jurisdictions, and invoicing templates within a few hours. The main gotcha: avoid connecting both a Shopify store and that store’s Stripe account separately — this creates duplicate invoices.

Taxually: Low to moderate. Setup involves connecting your sales channels and completing VAT/IOSS/OSS registrations, which Taxually’s compliance team facilitates. Because Taxually files legal returns on your behalf, some setup involves regulatory registration steps that have inherent lead times regardless of how streamlined the software is.

Verdict: Quaderno is faster to activate for checkout calculation. Plan a few weeks for Taxually if new registrations are required.

9. Reporting and Records

Quaderno: Multi-channel, multi-jurisdiction reporting:

UK VAT report structured for accountant or MTD software use
EU OSS report by country and rate, formatted for portal filing
IOSS report by EU country for monthly return
US sales tax report by state
Zero-amount reports for periods with no taxable transactions (important — a zero return still needs to be filed)

Taxually: Because Taxually legally files your returns, it retains the authoritative compliance archive. It holds the 10-year records required for IOSS, copies of every submitted return, and correspondence from tax authorities. For an EU VAT audit, Taxually’s archive is the primary record.

Verdict: Both provide strong records for their respective functions. Quaderno’s reports are structured for your accountant; Taxually’s are the official filed returns. Together they create a complete record chain from transaction to submitted return.

10. Ecosystem / Wider Product

Quaderno: Tax-first platform with an expanding product:

Automatic compliant VAT invoicing on every transaction
Quaderno Checkout for digital sellers who need a hosted checkout page
E-invoicing support for EU mandates under ViDA (Peppol, Verifactu, SII, NF525)
Managed filing for OSS and US state returns
Registration services when thresholds are crossed

Taxually: Focused EU/UK compliance service:

IOSS intermediary duties (legal responsibility for filing)
UK MTD filing as licensed agent
OSS registration and quarterly submissions
Local VAT registrations for sellers holding warehouse stock in EU countries
Compliance advice and ongoing correspondence with EU tax authorities

Verdict: Different ecosystems for different needs. Quaderno’s product automates tax in the transaction flow. Taxually’s product meets the regulatory filing obligations those transactions create. Sellers with significant EU exposure often benefit from having both.

11. Support

Quaderno: Human support with VAT compliance expertise and a personalised onboarding call for all new accounts. Consistently praised in reviews for responsive, knowledgeable support. They explicitly flag they are not certified tax advisors — they help you use the software and understand the rules, not advise on your specific legal position.

Taxually: Compliance-focused support staffed by EU and UK VAT specialists. Because Taxually files your returns as a licensed agent, the team is directly accountable for the compliance work — a different level of engagement than software support. For questions about EU VAT registrations, IOSS eligibility, and regulatory obligations, Taxually’s team has the authority to advise directly.

Verdict: Taxually’s support carries more regulatory weight — it is the registered agent, and its team is giving compliance guidance, not just product guidance. Quaderno’s support is broader across EU, US, and UK and well-suited to sellers managing compliance with tool-assisted reporting.

12. Best For — The Honest Verdict

Choose Quaderno if:

You need a single platform calculating VAT at checkout across multiple channels and payment processors
You sell to EU, UK, and US customers and want integrated coverage
You need compliant VAT invoices generated automatically for every transaction
You want a predictable flat monthly fee covering calculation, invoicing, and reporting
You’re comfortable handling the MTD filing step yourself via Xero, QuickBooks, or FreeAgent

Choose Taxually if:

You already have checkout calculation handled (Shopify Tax, Stripe Tax, or Quaderno) and want someone to file the returns
You need a registered IOSS intermediary to legally fulfil your EU filing obligation
You want UK MTD handled by a licensed agent who takes regulatory responsibility
You prefer a fully managed compliance service where EU VAT is outsourced end-to-end

Use both if:

You want Quaderno’s checkout calculation and automated invoicing, plus Taxually’s registered intermediary services for IOSS and OSS filing — a common and practical setup for UK cross-border sellers with meaningful EU volume

Quick Reference

Criteria	Quaderno	Taxually
Local filing	✗ Calculation + reports; no direct MTD filing	✓ Full MTD filing, licensed UK VAT agent
EU IOSS calculation	✓ Native, multi-channel	✗ Data aggregation only
EU IOSS filing	✗ Needs separate intermediary	✓ Registered IOSS intermediary
EU OSS	✓ Calculation + reports + managed filing	✓ Managed filing, end-to-end
US sales tax	✓ Coverage + managed filing	✗ Not covered
Checkout calculation	✓ Multi-channel, any payment processor	✗ No, compliance only
Automatic invoicing	✓ Compliant VAT invoices on every transaction	✗
Shopify / WooCommerce	✓ Native checkout integrations	✓ Data import integrations
Amazon / eBay / Etsy	Partial (FBA import)	✓ Marketplace aggregation
E-invoicing (ViDA)	✓ Peppol, Verifactu, SII, NF525	✗
Pricing	$49–$149/month flat fee	~€49–99/month subscription
Setup complexity	Low — guided onboarding call	Low-Moderate — includes registration lead times
Best for	Multi-channel sellers needing calculation + invoicing	Outsourced EU/UK filing; IOSS intermediary

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EU Selling Setup Checklist — full step-by-step for international sellers going cross-border
Selling to EU Consumers — the rules in detail
UK Domestic VAT Guide — the rules for domestic VAT and MTD filing