TTassetta
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What we handle

Five things have to happen. Tassetta does all five.

Five capabilities on one platform, with a named CPA on every return. Some show up in your portal as things you see and approve. That is what you see when you sign in. The rest run in the ops workbench we operate on your behalf. Every screen below is labeled so you know which side of the wall it’s on.

01

Nexus monitoring

Know the day you cross, not the year after.

  • All 50 states and DC, measured against your live sales and transaction counts.
  • The rules dataset is versioned, so your position never runs on last year’s thresholds.
  • Marketplace-remitted sales separated from your direct sales in the count.
  • Crossing a threshold creates the obligation on your filing calendar automatically.
Ops view · Liability by state
CA · May 2026$6,262 open
WA · May 2026$4,423 open
GA · May 2026$2,932 open
FL · at 96% of thresholdApproaching
NJ · at 92% of thresholdApproaching
02

State registrations

Crossed means registered, tracked to the account number.

  • The platform prepares the registration. A CPA reviews it. You approve it.
  • Tracked through to the state confirmation and account number.
  • The state joins your filing calendar the moment it is active.
  • Portal credentials get vaulted so filings can be submitted end-to-end.
In your portal · Prior registrations
GA, activeApproved
IL, activeApproved
State portal credentials · ILDelegate missing
Marketplace channel listClient to confirm
03

Filing and remittance

Calculated, verified by a CPA, approved by you, filed on time.

  • Every return, per state, on the frequency each state assigned you.
  • The platform calculates it; a named CPA reconciles it to the tax you collected and signs.
  • You approve in one click, with every line of the workpaper visible.
  • Remittance runs on schedule. A failure surfaces as an open exception until it clears.
Ops view · Filing calendar
Ember Home Co. · GA · May 2026Overdue 82d
Northstar Goods · CA · May 2026Overdue 82d
Ember Home Co. · GA · Aug 2026Due in 10d
Northstar Goods · WA · Aug 2026Due in 10d
Ember Home Co. · GA · Sep 2026Upcoming 40d
04

Notices and audits

A notice gets matched to the return it is about.

  • Notices intake, matched to the filing period in question.
  • The response is drafted by the CPA who worked that return.
  • You approve the reply. The whole exchange is logged against the filing.
  • The evidence trail (source data, workpaper, sign-offs) stays attached for audit.
Ops view · Notice workflow
Ember Home Co. · GA May 2026Payment failure
Northstar Goods · CA May 20263 exceptions
Northstar Goods · WA May 2026Awaiting client
05

Exemption certificates

An exempt line that holds up when someone checks it.

  • Certificates collected, validated, watched for expiry.
  • Which sales are actually exempt is resolved before the return, not after.
  • Every exempt line on a return ties back to a certificate in the archive.
  • When an auditor asks, the answer is a folder. Not a search.
In your portal · Return workpaper, GA May 2026
Gross sales (H)$38,200
Net taxable (J)$36,770
Exempt sales (I)$0 · certificates on file
Tax collected (K)$2,932
Variance+$0 · resolved

Controls enforced

Three rules the platform will not let anyone bend.

The controls that make a filing defensible on audit day are not policy. They are enforced in software.

Expert sign-off
Every return is reviewed and signed by a Tassetta expert before it reaches client approval.
Client approval
No return can be filed without the client’s one-click approval on the packet.
7-year evidence retention
Every workpaper, approval, and confirmation is retained for seven years in a tamper-evident archive.

See where you stand before you commit.

One CSV export from Shopify. A report of every state you already owe in, where you’re close, and what getting compliant would actually cost.

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