RTI
Submit EPS from monthly balances
Submit an EPS (Employer Payment Summary) to HMRC based on monthly balances for a specific tax year and month
POST
/
rti
/
eps
/
monthly-balances
/
{taxYear}
/
{taxMonth}
Submit EPS from monthly balances
curl --request POST \
--url https://api.sandbox.flowpayroll.ai/v1/rti/eps/monthly-balances/{taxYear}/{taxMonth} \
--header 'Content-Type: application/json' \
--header 'X-Auth-Token: <api-key>' \
--header 'X-Org-Id: <api-key>' \
--data '
"Final submission details for the period"
'import requests
url = "https://api.sandbox.flowpayroll.ai/v1/rti/eps/monthly-balances/{taxYear}/{taxMonth}"
payload = "Final submission details for the period"
headers = {
"X-Auth-Token": "<api-key>",
"X-Org-Id": "<api-key>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {
'X-Auth-Token': '<api-key>',
'X-Org-Id': '<api-key>',
'Content-Type': 'application/json'
},
body: JSON.stringify('Final submission details for the period')
};
fetch('https://api.sandbox.flowpayroll.ai/v1/rti/eps/monthly-balances/{taxYear}/{taxMonth}', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.sandbox.flowpayroll.ai/v1/rti/eps/monthly-balances/{taxYear}/{taxMonth}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode('Final submission details for the period'),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json",
"X-Auth-Token: <api-key>",
"X-Org-Id: <api-key>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.sandbox.flowpayroll.ai/v1/rti/eps/monthly-balances/{taxYear}/{taxMonth}"
payload := strings.NewReader("\"Final submission details for the period\"")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("X-Auth-Token", "<api-key>")
req.Header.Add("X-Org-Id", "<api-key>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.sandbox.flowpayroll.ai/v1/rti/eps/monthly-balances/{taxYear}/{taxMonth}")
.header("X-Auth-Token", "<api-key>")
.header("X-Org-Id", "<api-key>")
.header("Content-Type", "application/json")
.body("\"Final submission details for the period\"")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.sandbox.flowpayroll.ai/v1/rti/eps/monthly-balances/{taxYear}/{taxMonth}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["X-Auth-Token"] = '<api-key>'
request["X-Org-Id"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "\"Final submission details for the period\""
response = http.request(request)
puts response.read_body{
"message": {
"text": "<string>",
"token": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": {},
"metadata": {
"dateFormat": "yyyy-MM-dd",
"dateTimeFormat": "yyyy-MM-ddTHH:mm:ss.fffZ",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": "<string>"
}
]
}
],
"messageToken": "<string>",
"data": "<?xml version=\"1.0\" encoding=\"UTF-8\"?>..."
}{
"message": {
"text": "<string>",
"token": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": {},
"metadata": {
"dateFormat": "yyyy-MM-dd",
"dateTimeFormat": "yyyy-MM-ddTHH:mm:ss.fffZ",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": "<string>"
}
]
}
],
"messageToken": "<string>",
"data": {
"submissionId": "EPS_2025_001",
"taxYear": 2025,
"organisationId": "org_123",
"hmrcEpsReportStatus": "Sent",
"createdDate": "2025-01-01T00:00:00Z",
"createdBy": "user_123",
"updatedDate": "2025-01-02T00:00:00Z",
"updatedBy": "user_456",
"taxMonth": 6,
"submissionBody": "Submission body content",
"correlationID": "corr_123",
"submissionDate": "2025-01-01T00:00:00Z",
"submissionResponse": "Response from HMRC",
"errors": [
"Error message 1",
"Error message 2"
]
}
}{
"message": {
"text": "<string>",
"token": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": {},
"metadata": {
"dateFormat": "yyyy-MM-dd",
"dateTimeFormat": "yyyy-MM-ddTHH:mm:ss.fffZ",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": "<string>"
}
]
}
],
"messageToken": "<string>"
}{
"message": {
"text": "<string>",
"token": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": {},
"metadata": {
"dateFormat": "yyyy-MM-dd",
"dateTimeFormat": "yyyy-MM-ddTHH:mm:ss.fffZ",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": "<string>"
}
]
}
],
"messageToken": "<string>"
}Authorizations
Access token obtained from OAuth2 client credentials flow
Organisation to scope the request to. Required when the principal can access more than one organisation; optional for single-organisation principals (the authorizer resolves it automatically).
Path Parameters
The tax year to submit EPS for
Required range:
1800 <= x <= 3000The tax month to submit EPS for
Required range:
1 <= x <= 12Query Parameters
Whether to generate a preview without submitting to HMRC
Body
application/json
- Option 1
- Option 2
Final submission details for tax years 2024/2025 and 2025/2026
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⌘I
Submit EPS from monthly balances
curl --request POST \
--url https://api.sandbox.flowpayroll.ai/v1/rti/eps/monthly-balances/{taxYear}/{taxMonth} \
--header 'Content-Type: application/json' \
--header 'X-Auth-Token: <api-key>' \
--header 'X-Org-Id: <api-key>' \
--data '
"Final submission details for the period"
'import requests
url = "https://api.sandbox.flowpayroll.ai/v1/rti/eps/monthly-balances/{taxYear}/{taxMonth}"
payload = "Final submission details for the period"
headers = {
"X-Auth-Token": "<api-key>",
"X-Org-Id": "<api-key>",
"Content-Type": "application/json"
}
response = requests.post(url, json=payload, headers=headers)
print(response.text)const options = {
method: 'POST',
headers: {
'X-Auth-Token': '<api-key>',
'X-Org-Id': '<api-key>',
'Content-Type': 'application/json'
},
body: JSON.stringify('Final submission details for the period')
};
fetch('https://api.sandbox.flowpayroll.ai/v1/rti/eps/monthly-balances/{taxYear}/{taxMonth}', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://api.sandbox.flowpayroll.ai/v1/rti/eps/monthly-balances/{taxYear}/{taxMonth}",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_POSTFIELDS => json_encode('Final submission details for the period'),
CURLOPT_HTTPHEADER => [
"Content-Type: application/json",
"X-Auth-Token: <api-key>",
"X-Org-Id: <api-key>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "https://api.sandbox.flowpayroll.ai/v1/rti/eps/monthly-balances/{taxYear}/{taxMonth}"
payload := strings.NewReader("\"Final submission details for the period\"")
req, _ := http.NewRequest("POST", url, payload)
req.Header.Add("X-Auth-Token", "<api-key>")
req.Header.Add("X-Org-Id", "<api-key>")
req.Header.Add("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://api.sandbox.flowpayroll.ai/v1/rti/eps/monthly-balances/{taxYear}/{taxMonth}")
.header("X-Auth-Token", "<api-key>")
.header("X-Org-Id", "<api-key>")
.header("Content-Type", "application/json")
.body("\"Final submission details for the period\"")
.asString();require 'uri'
require 'net/http'
url = URI("https://api.sandbox.flowpayroll.ai/v1/rti/eps/monthly-balances/{taxYear}/{taxMonth}")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["X-Auth-Token"] = '<api-key>'
request["X-Org-Id"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "\"Final submission details for the period\""
response = http.request(request)
puts response.read_body{
"message": {
"text": "<string>",
"token": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": {},
"metadata": {
"dateFormat": "yyyy-MM-dd",
"dateTimeFormat": "yyyy-MM-ddTHH:mm:ss.fffZ",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": "<string>"
}
]
}
],
"messageToken": "<string>",
"data": "<?xml version=\"1.0\" encoding=\"UTF-8\"?>..."
}{
"message": {
"text": "<string>",
"token": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": {},
"metadata": {
"dateFormat": "yyyy-MM-dd",
"dateTimeFormat": "yyyy-MM-ddTHH:mm:ss.fffZ",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": "<string>"
}
]
}
],
"messageToken": "<string>",
"data": {
"submissionId": "EPS_2025_001",
"taxYear": 2025,
"organisationId": "org_123",
"hmrcEpsReportStatus": "Sent",
"createdDate": "2025-01-01T00:00:00Z",
"createdBy": "user_123",
"updatedDate": "2025-01-02T00:00:00Z",
"updatedBy": "user_456",
"taxMonth": 6,
"submissionBody": "Submission body content",
"correlationID": "corr_123",
"submissionDate": "2025-01-01T00:00:00Z",
"submissionResponse": "Response from HMRC",
"errors": [
"Error message 1",
"Error message 2"
]
}
}{
"message": {
"text": "<string>",
"token": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": {},
"metadata": {
"dateFormat": "yyyy-MM-dd",
"dateTimeFormat": "yyyy-MM-ddTHH:mm:ss.fffZ",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": "<string>"
}
]
}
],
"messageToken": "<string>"
}{
"message": {
"text": "<string>",
"token": "<string>",
"tokenArguments": [
{
"name": "<string>",
"value": "<string>"
}
]
},
"content": {
"data": {},
"metadata": {
"dateFormat": "yyyy-MM-dd",
"dateTimeFormat": "yyyy-MM-ddTHH:mm:ss.fffZ",
"paginationToken": "<string>"
}
},
"validationIssues": [
{
"field": "<string>",
"reason": "<string>",
"reasonToken": "<string>",
"reasonTokenArguments": [
{
"name": "<string>",
"value": "<string>"
}
]
}
],
"messageToken": "<string>"
}