Hyperline runs your billing. Kintsugi reads your invoices to show where you have nexus, power your reports, and file your returns. Connect with one secure sign-in.
Free exposure monitoring · Filing from $75 · No per-transaction fees
Rated 4.6/5 on G2 (55 reviews) · 7,000+ customers
Kintsugi
Trusted by 7,000+ businesses
Kintsugi checks your Hyperline invoices against registration and reporting thresholds and flags where you have exposure.
Invoices, line items, and credit notes come across, so your reports rest on what you actually billed.
Your synced invoices feed your returns, so you can file through Kintsugi without rebuilding your billing data.
Kintsugi reads your invoices and credit notes after you approve it in Hyperline. It never writes to your billing. You keep setting tax in Hyperline.
Open Data Sources and choose Hyperline.
Sign in as an admin and approve Kintsugi. There is no API key to create or copy.
Choose the invoicing entity to connect and, if you want, an import start date. Syncing starts right away. Kintsugi assigns product categories for you to approve, flags addresses to fix, and starts watching your thresholds.
| Synced | What Kintsugi does with it |
|---|---|
| Invoices | Your final invoices, with line items, for nexus tracking and reports. Draft and open invoices are held as pending until Hyperline finalizes them. |
| Credit notes | Linked to the original invoice, so refunds net out correctly |
| Customers | Name, email, billing address, and tax ID where present, plus whether the customer is exempt |
| Products | Your product catalog, which Kintsugi categorizes for tax |
Kintsugi reads invoice status to tell whether a sale counts, so it does not import payments as a separate record.
Kintsugi signs in through Hyperline's own approval screen and only reads invoices, credit notes, customers, and products. It does not write to Hyperline, and it never changes your Hyperline tax settings. You can deactivate the connection at any time, and the data already synced stays in Kintsugi.
Flat-fee, per-seat, and usage-based invoices all land as invoices, so they sit in one place.
Kintsugi keeps one connection per entity, so you connect each one on its own and keep each legal entity's liability separate.
Credit notes link to the original invoice, and product and address issues surface in one list.
Hyperline runs your products, customers, subscriptions, and invoices, and it is where you set tax for your invoices.
This connection reads invoices and credit notes only. It does not calculate tax inside Hyperline and it does not send tax or VAT rates back to your billing.
Kintsugi imports your invoices and credit notes and uses them to track nexus, build reports, and file your returns.
Jared Stark
Founder of Incendico Fire Alarm Store
The setup was incredibly seamless and much faster than I expected, with clear guidance throughout the process. What really stands out is their support since it is easy to get in touch with someone quickly and the team is knowledgeable and actually helpful when you have questions.
April Walford
Operations Manager at JMXi
They corrected errors in our past returns, enrolled us quickly and efficiently, filed everything on time, and thoroughly researched any questions or concerns we had. Their customer service is excellent.
Mo Hartman
Staff Accountant at Searchspring
Having the visibility on the dashboard has been extremely helpful and the ease of being able to approve. It is very user-friendly and I can see everything I need in one place.
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