Invoicing & Payments Software for Your Art Gallery | ARTERNAL

Transform Invoices into Revenue

Easy-to-use invoicing and payments experience made to streamline your art gallery sales and the collector buying experience.

Creating invoices & getting paid has never been easier

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Easy and convenient

Start accepting online payments with an easy setup.

Secure & faster payments

Secure payments accepted via credit/debit card, ACH, and Buy Now, Pay Later with Affirm.

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Grow & enhance your art business

See real time activity on your transactions, inventory and contacts.

Power your payments with Stripe

Flexible payment options for your collectors — credit & debit cards, ACH bank transfers, or financing through Affirm. Competitive and transparent rates with integrated per-transaction pricing and no hidden fees.

Buy Now, Pay Later

Grow your client relationships and increase their buying power. Make artwork purchases more attainable and hassle-free for you and the collector. Reach a broader collector base with Affirm's real-time decision process and flexible payment options.

Create and send invoices seamlessly. Get paid faster.

Create professional, branded invoices in minutes. Build your brand by customizing invoice templates with your logo, fonts and personalized messaging. Send invoices more efficiently — switching between multiple apps is a thing of the past.

Supercharge your Art Sales

One connected platform

Invoices connect with your inventory and contacts, so all sides of your business are in sync.

Private & Secure

Invoices can be password-protected to reduce cyber hacking and phishing.

Conveniently send and share invoices

Send personalized invoices and track if they've been opened. All within the ARTERNAL platform.

Automatic sales tax calculation

Instantly calculate accurate sales tax — using up-to-date rates and address validation.

Economic nexus tracking

We track sales so you stay ahead of your economic nexus exposure.

Sync Invoices to Quickbooks

Easily sync invoices and payments to Quickbooks with our integration.

FAQ

How does ARTERNAL Pay work?

ARTERNAL pay allows you to accept payment for inventory or any service you invoice through ARTERNAL via Credit Card, Affirm, or ACH. We've partnered up with Stripe to provide the most secure and trusted payments infrastructure on the web.

Can I choose which invoices will have payment options?

Yes! You can select which payment options you would like to have available when you are creating an invoice, on each invoice you will be able to select from those which ones you would like to offer for that specific sale.

Is my business able to use ARTERNAL Pay?

Payments via Affirm are currently only available in the United States and Canada. ACH bank transfers are only limited to the United States.

You can receive payment from the below 46 countries, you can also check Stripe's access page to see the most up-to-date list of countries.

We are gradually expanding our list of payment methods, please reach out to request a payment method that your gallery uses.

Is there an additional cost to use ARTERNAL Pay?

There are no additional costs to your ARTERNAL subscription for using ARTERNAL Pay. However, there are integrated transaction fees for any payments enabled invoice.

When will I receive the payments in my bank account?

Payouts into your bank account will depend on which country you're operating in.

In most cases, when you start processing live payments from your customers with Stripe, you won't receive your first payout until 7–14 days after receiving your first successful payment. At all times, Stripe will have a list of all of your transactions and the date that you expect to receive them in your bank account in your Stripe Dashboard.

When will my customer's payment settle?

The time it takes for a payment to settle depends on the payment method used by your customer. Once your customer's payment is processed, the dashboard will update to reflect the confirmed payment status (ie. succeed, failed, etc.) and the funds will have settled.

Please note: settlement timing for incoming payments is different from when the funds become available for payout to your linked bank.

Below is an overview of the estimated time it takes for payments to settle based on the payment methods used by customers.

Credit Cards: 1 business day

Affirm: 1 business day

ACH Debits: 4 business days, 2 business days if the account is approved for same-day ACH

What is the total amount I can accept through ARTERNAL Pay on one invoice?

Credit Card: No limit: it will depend on the buyer's individual credit card limit

Affirm: $50 – $30,000 with loans up to $20,000

ACH: $1,000,000 (Buyer's individual bank account may have limits in place)

Do you have support for Germany's invoicing standards (XRechnung, ZUGFeRD, EN 16931)

Yes, ARTERNAL fully supports workflows aligned with Germany's evolving e-invoicing requirements.

Germany's invoicing rules are based on the EU EN 16931 standard, which requires invoices, especially for government contracts (B2G), to use structured e-invoice formats such as:

• XRechnung, a machine-readable XML format required for B2G invoices

• ZUGFeRD, a hybrid PDF + embedded XML format widely used in B2B

• Mandatory B2B structured e-invoicing is expected by 2028, meaning simple PDFs will no longer meet compliance on their own

How ARTERNAL supports this

ARTERNAL already generates clean, compliant invoice PDFs, and our roadmap includes support for:

• EN 16931–aligned data structures inside the invoice engine

• Export to structured XML compatible with XRechnung

• Hybrid PDF/XML generation to support ZUGFeRD workflows

• Automated data mapping for fields required by German tax and e-invoicing regulations.

ARTERNAL puts you back in control

Galleries are switching to ARTERNAL because they want a modern, intuitive system that addresses these core pain points: