Multi-state payroll

A team that crosses state lines is not a typical workspace and not a typical payroll. AxisSynapse handles 9 supported states with frozen tax tables, state W-4 intake per employee, a reciprocity matrix that automatically routes withholding when work-state differs from residence-state, and SUTA per-state with workspace overrides. Every payroll run produces a state-filing report ready for your state agency portals.

TL;DR — Open HCM → Settings → Multi-state. Confirm the supported states active for your workspace, the reciprocity matrix entries, and your SUTA rates. Employees fill state W-4 on hire (or on residence change). Each payroll run produces a per-state filing report.

Before you start

• Make sure each employee's state of employment and residence state are correctly recorded — drives the reciprocity routing.
• Have your SUTA rates per state ready. Newly added states start at the published new-employer rate; HR overrides with the workspace's experience-rated number once received from the state.
• Know which state W-4 form version your state uses. Multi-state hires complete one per applicable state.

The 9 supported states

Reciprocity matrix

Reciprocity between states means an employee resides in one state but works in another, and the two states have an agreement to tax only the residence state (avoiding double taxation). AxisSynapse honors the published reciprocity agreements for the 9 supported states:

Configure a state

1. 1

   Open HCM → Settings → Multi-state

   The page lists every state enabled for the workspace.

2. 2

   Click "+ Add state"

   Pick from the supported list.

3. 3

   Enter the SUTA rate

   Workspace's experience-rated rate per state. Defaults to the new-employer rate if not provided.

4. 4

   Confirm reciprocity entries

   Reciprocity matrix is pre-populated; review and confirm the agreements that apply to your workforce.

5. 5

   Save

   Audit log records HCM_MULTISTATE_TAX_TABLE_REFRESHED for the initial add. HCM_MULTISTATE_SUTA_OVERRIDE if a non-default SUTA rate was used.

State W-4 intake

1. 1

   Trigger the prompt

   On hire OR on residence change, the employee receives a state W-4 task in their Action Inbox.

2. 2

   Employee completes the state form

   The form mirrors the state's official W-4 layout (DE-4, IT-2104, etc.).

3. 3

   Confirmation

   Audit log records HCM_MULTISTATE_W4_UPDATED.

4. 4

   If cross-state work

   Reciprocity check runs. If a reciprocity agreement applies, the routing is recorded; the form on file substitutes the non-residency certificate. Audit log records HCM_MULTISTATE_RECIPROCITY_APPLIED on the next pay run.

Per-run state filing report

Every payroll run produces a per-state filing summary covering:

Every field, explained

Audit codes

For SIEM ingestion + compliance review, this surface emits:

See Reference → Audit codes for the canonical description of each.

Common gotchas

• "Employee is taxed in both states." Their residence state + work state are both set, but no reciprocity agreement covers them. They file a non-resident state return at year-end with the credit-for-other-state claim. The withholding routing is correct.
• "My new state's SUTA is the new-employer rate." Once the state assigns your experience-rated rate, update it on the state's settings card. Past-period reconciliation may be required.
• "Reciprocity routing applied but the employee's W-2 shows two states." Some reciprocity agreements still require both states to appear on the W-2 (zero withheld in the work state). The year-end output reflects the agreement; the employee files a zero-tax return to that state.
• "My state isn't in the supported 9." Talk to your account team — additional state support is on the roadmap. In the meantime, employees in unsupported states require an external filing process at year-end.

Troubleshooting