API · Exit · Compliance
Close state registration.
Records closure intent for a state registration. Each state has its own multi-step closure: file final returns marked final, request the agency's tax-clearance certificate, then formally close the account. This verb captures the closure intent and links the per-step Filing records (final wage report, final withholding return, employer-tax clearance request) via final_filings[]. Status transitions confirmed → closing → closed.
The actual final returns are filed by the payroll provider; this verb records that the closure is in flight on Matter's side and pulls the obligation off the recurring Compliance calendar. See api/conventions/payroll-and-benefits-handoff for why the recurring-flow side lives off-Matter.
Tier-3 token + human signature required. Idempotent on Idempotency-Key.
Last updated
Request Body
application/json
TypeScript Definitions
Use the request body type in TypeScript.
reasonstringRequired"dissolution""switching_provider""no_longer_required""account_consolidation""other"effective_datestring<date>Requiredfinal_filingsarray<string>OptionalFiling IDs for the per-step final returns / clearance
requests required by the state's closure procedure.
The closure cannot complete until each is accepted.
clearance_request_filing_idstringOptionalThe state-employer-tax-clearance request Filing
(e.g. ca_edd_clearance_request,
ny_dol_clearance_request,
wa_esd_clearance_request,
ma_dor_employer_clearance_request).
authorizing_resolution_idstringOptionalResponse Body
application/json
application/problem+json
application/problem+json
Request
curl -X POST "https://api.mattermode.com/v1/state_registrations/{id}/close" \ -H "Content-Type: application/json" \ -d '{ "reason": "dissolution", "effective_date": "2019-08-24" }'const body = JSON.stringify({ "reason": "dissolution", "effective_date": "2019-08-24"})fetch("https://api.mattermode.com/v1/state_registrations/{id}/close", { method: "POST", headers: { "Content-Type": "application/json" }, body})package mainimport ( "fmt" "net/http" "io/ioutil" "strings")func main() { url := "https://api.mattermode.com/v1/state_registrations/{id}/close" body := strings.NewReader(`{ "reason": "dissolution", "effective_date": "2019-08-24" }`) req, _ := http.NewRequest("POST", url, body) req.Header.Add("Content-Type", "application/json") res, _ := http.DefaultClient.Do(req) defer res.Body.Close() body, _ := ioutil.ReadAll(res.Body) fmt.Println(res) fmt.Println(string(body))}import requestsheaders = { "Authorization": "Bearer sk_test_4eC39HqLyjWDarjtT1zdp7dc", "Matter-Version": "2026-06-10", "Idempotency-Key": "ee7c3a9b-3f1a-4d8e-9b2a-7c5e1f0a2d4b",}payload = { "reason": "dissolution", "effective_date": "2026-01-01"}resp = requests.post( "https://api.mattermode.com/v1/state_registrations/id_placeholder/close", headers=headers, json=payload,)resp.raise_for_status()print(resp.json())import java.net.URI;import java.net.http.HttpClient;import java.net.http.HttpRequest;import java.net.http.HttpResponse;import java.net.http.HttpResponse.BodyHandlers;import java.time.Duration;import java.net.http.HttpRequest.BodyPublishers;var body = BodyPublishers.ofString("""{ "reason": "dissolution", "effective_date": "2019-08-24"}""");HttpClient client = HttpClient.newBuilder() .connectTimeout(Duration.ofSeconds(10)) .build();HttpRequest.Builder requestBuilder = HttpRequest.newBuilder() .uri(URI.create("https://api.mattermode.com/v1/state_registrations/{id}/close")) .header("Content-Type", "application/json") .POST(body) .build();try { HttpResponse<String> response = client.send(requestBuilder.build(), BodyHandlers.ofString()); System.out.println("Status code: " + response.statusCode()); System.out.println("Response body: " + response.body());} catch (Exception e) { e.printStackTrace();}using System;using System.Net.Http;using System.Text;var body = new StringContent("""{ "reason": "dissolution", "effective_date": "2019-08-24"}""", Encoding.UTF8, "application/json");var client = new HttpClient();var response = await client.PostAsync("https://api.mattermode.com/v1/state_registrations/{id}/close", body);var responseBody = await response.Content.ReadAsStringAsync();curl --request POST 'https://api.mattermode.com/v1/state_registrations/id_placeholder/close' \ --header 'Authorization: Bearer sk_test_4eC39HqLyjWDarjtT1zdp7dc' \ --header 'Matter-Version: 2026-06-10' \ --header 'Idempotency-Key: ee7c3a9b-3f1a-4d8e-9b2a-7c5e1f0a2d4b' \ --header 'Content-Type: application/json' \ --data '{ "reason": "dissolution", "effective_date": "2026-01-01"}'const response = await fetch("https://api.mattermode.com/v1/state_registrations/id_placeholder/close", { method: "POST", headers: { "Authorization": "Bearer sk_test_4eC39HqLyjWDarjtT1zdp7dc", "Matter-Version": "2026-06-10", "Idempotency-Key": "ee7c3a9b-3f1a-4d8e-9b2a-7c5e1f0a2d4b", "Content-Type": "application/json", }, body: JSON.stringify({ "reason": "dissolution", "effective_date": "2026-01-01" }),});if (!response.ok) { throw new Error(`Matter API ${response.status}: ${await response.text()}`);}const data = await response.json();console.log(data);Response
application/json{
"object": "state_registration",
"id": "string",
"entity_id": "string",
"registration_kind": "employer",
"agency": null,
"agency_account_kind": null,
"jurisdiction": {
"state": "string",
"county": "string",
"city": "string"
},
"status": "pending",
"effective_date": "2019-08-24",
"confirmed_at": "2019-08-24T14:15:22Z",
"closed_at": "2019-08-24T14:15:22Z",
"closure_status": {
"initiated_at": "2019-08-24T14:15:22Z",
"initiated_by": "string",
"authorizing_resolution_id": "string",
"target_terminal_state": "closed",
"sub_account_progress": [
{
"agency": "string",
"agency_account_kind": "string",
"state_account_number": "string",
"status": "pending_final_filings",
"blocker_summary": "string",
"clearance_filing_id": "string",
"final_return_filing_ids": [
"string"
],
"expected_clearance_at": "2019-08-24",
"closed_at": "2019-08-24T14:15:22Z"
}
],
"blocked_summary": "string",
"terminal_at": "2019-08-24T14:15:22Z"
},
"state_account_number": "string",
"trade_name": "string",
"trigger": null,
"registered_agent_partner_id": "string",
"obligations": [
{
"form_code": "string",
"period_kind": "monthly",
"due_at": "2019-08-24",
"agency": "string",
"filing_id": "string"
}
]
}{
"type": "https://mattermode.com/docs/errors/not_found",
"title": "Not found",
"status": 404,
"code": "not_found",
"detail": "No entity with id `ent_Nq3KcAbc` is visible to this token.",
"doc_url": "https://mattermode.com/docs/guides/errors#not_found",
"request_id": "req_Qw9xYz8A"
}{
"type": "https://mattermode.com/docs/errors/invalid_state_transition",
"title": "Invalid state transition",
"status": 409,
"detail": "Entity ent_Nq3KcAbc is in state `dissolved` and cannot be dissolved again.",
"instance": "/requests/req_Qw9xYz8A",
"code": "invalid_state_transition",
"param": "founders[0].equity",
"doc_url": "https://mattermode.com/docs/guides/errors#invalid_state_transition",
"request_id": "req_Qw9xYz8A",
"retry_after": 30,
"authorized_by": {
"human_principal_id": "usr_4Kj2m8pQ",
"agent_id": "agt_Nq3KcAbc"
}
}