The Right Tax Lines,
On Every Invoice.
LedgerUp applies the correct tax treatment to every invoice — pulling from your tax engine or configured rules — so QuickBooks and NetSuite get clean tax lines and filings reconcile without archaeology.
Tax by habit vs tax by rule
Invoice tax errors are small, numerous, and compounding — every wrong line is future filing cleanup.
Without automation
- Tax applied per-invoice from memory of which customers are taxable
- Exemption certificates in a folder nobody checks at billing time
- New jurisdictions billed untaxed until someone notices nexus
- Manually keyed invoices skip the tax engine entirely
- Filing season starts with reconciling billed tax to what should have been billed
With LedgerUp
- Tax treatment resolved per customer, product, and jurisdiction on every invoice
- Your tax engine (Avalara, Stripe Tax) or configured rules applied consistently
- Exemption certificates tracked on the account and honored automatically
- Every automated invoice gets tax treatment — no bypass path
- Tax lines post cleanly to your ledger, mapped for filing
How tax line automation works
From customer setup to filed-and-reconciled.
Tax profile established per customer
Each account carries its tax context: jurisdiction from billing address, exemption certificates on file with expiry tracking, and product taxability per your catalog mapping.
Treatment resolved at invoice time
When Ari generates an invoice, tax resolves through your tax engine — Avalara or Stripe Tax if you use one — or through your configured rules. SaaS taxability by state, exempt customers, and VAT treatment for international entities all apply automatically.
Clean lines to the ledger
Tax posts as proper tax lines mapped to the right liability accounts in QuickBooks, NetSuite, or Sage Intacct — not bundled into revenue lines that filing season has to unpick.
Exceptions flagged before they compound
An expired exemption certificate, a first invoice into a new state, a customer address change that shifts jurisdiction — each flags for review instead of silently billing wrong for months.
Works with your existing stack
LedgerUp connects to the tools you already use — no migration required.
Tax automation use cases
Where automated tax lines prevent expensive cleanup.
SaaS Taxability Across States
SaaS is taxable in some states, exempt in others, and partially taxable in a few. Ari applies your per-state treatment consistently, so growth into new states doesn’t mean growing tax debt.
A new customer in a state that taxes SaaS gets tax lines from invoice one; your existing exempt-state customers stay untouched.
Exemption Certificate Management
Exempt customers are only exempt while their certificate is valid. Certificates live on the account, apply automatically, and flag before expiry.
A nonprofit’s certificate expires in 60 days; finance gets a Slack flag to request renewal before the next annual invoice bills taxable.
VAT on International Entities
EU entity invoices carry VAT treatment — including reverse-charge notation for B2B cross-border sales — per your entity configuration, composing with multi-entity routing.
A French customer of your Dutch entity gets a reverse-charge invoice with both VAT numbers displayed, per EU B2B convention.
Tax is part of invoice correctness
Clean tax lines are one dimension of invoices that survive audit.
Multi-entity billing
Entity-specific tax treatment — US sales tax vs EU VAT — handled per entity.
See multi-entity billingAudit trail
Every tax decision documented — which filing season will thank you for.
See audit trailSales tax FAQ
Common questions about automating invoice tax lines with LedgerUp.
Does LedgerUp calculate tax rates itself?
LedgerUp orchestrates, it doesn’t replace your tax authority. If you use a tax engine like Avalara or Stripe Tax, Ari calls it per invoice and applies the result. If you use configured rules — common for B2B SaaS with a handful of nexus states — Ari applies those consistently. Rate determination stays with the tool your tax advisors chose.
How are exemption certificates handled?
Certificates attach to the customer account with jurisdiction and expiry. Invoices to that account apply the exemption automatically while valid, and finance gets flagged ahead of expiry. No more checking a folder at billing time — or forgetting to.
What happens when we get nexus in a new state?
Nexus determination is your tax advisor’s call; execution is LedgerUp’s. When you enable a new state, treatment applies to all affected customers from that date — and Ari flags first-time invoices into states you haven’t configured, which is often the prompt for the nexus conversation.
How do tax lines appear in QuickBooks and NetSuite?
As native tax lines mapped to your liability accounts — using each system’s tax machinery rather than generic line items. Filing-time reports pull from properly categorized data instead of reverse-engineered revenue lines.
Does this handle VAT for international billing?
Yes, per entity. EU entities apply VAT treatment including reverse-charge notation for cross-border B2B; UK entities handle UK VAT. Entity tax configuration composes with multi-entity routing — the entity that bills determines the tax regime that applies.
What if an invoice was billed with wrong tax?
The correction runs through the standard credit-and-rebill flow: credit the incorrect invoice, reissue with correct treatment, both documents linked and logged. The audit trail shows what was wrong, when it was caught, and how it was fixed.