Starting Collections

Collection Schedule

The Collection Schedule is used to hold the information on the payment’s frequency, the payment amount, and currency. For example, a Collection Schedule can be set up to collect £100 on 15th of every month for the next 12 months. Modulr will then automatically create individual Collections to receive payments as per the schedule. Collection Schedules can also be set up to collect a one-off payment.

Collection Schedules can be set up to collect a certain amount as a first payment and a different amount as the regular recurring payment. For example, you can specify that the first payment is for £200 on 20th April, and the regular recurring payments should be on a monthly basis for of £100 to be collected on the 1st of every month. The regular recurring amount needs to be for the same amount. If the collection amount will vary then a new Collection Schedule needs to be made for each collection. Please note that every time a new single collection is requested the Payer needs to be notified of this new amount; this is something you will need to make sure happens as it is a rule of the Direct Debit scheme.

For details on all the parameters needed for the POST /mandates/id/collectionschedules endpoint the documentation is here: Create a scheduled collection

Advance Notice

At least 3 working days’ Advance notice must be given by our Partner to their customers before the first Direct Debit is collected in the form of an email.

Advance notice must be given before the first collection but is not required for subsequent collections. Advance notice must also be given if the Service User makes any changes to the Direct Debit amount, due date or frequency. The timescale of this communication, or advance notice period, must adhere to what was originally advised in the Direct Debit Guarantee, and must also be delivered by the method of communication as advised to the Payer. For re-presentable collections, no advance notice is needed again.

Contact us to get the BACS' guidelines on the UI for signing up new customers and Advance Notices for Direct Debit.

Collection Request

New mandate and first collection
The diagram below displays the journey when a Partner's customer signs up for the Direct Debit service. It gives a high-level overview of the process needed to do a 1st collection to an unsuccessful collection. Included in the diagram are the mandate creation, collection schedule, happy and unhappy paths. The first collection process will take from Day 1 to Day 6 for the Partner to receive the collection amount from their customer.

Existing mandate and new collection
For existing mandates and collection schedules, the Partner can be assured that Modulr will create and send the collection request two working days before the collection date. The Partner does not have to do anything else and the timeline is shorten because of an existing mandate on a customer's account.

Timeline of events for Collections

Happy Path

Day 1:

  1. The Collection Schedule triggers Collection request to start the process of collecting funds from the Partner’s customer.
  2. Modulr generates a file that includes collection amount from the customer.
  3. Modulr’s cut-off time is at 3:30PM, as Modulr needs to transform the file into a format accepted by BACS. The status changes to “Processing”.
  4. At 5:10PM, Modulr sends the file to the Scheme
  5. Collection Schedule creates a collection request for the next due date.

Day 2:

  1. The Paying bank receives the collection request from the Scheme.
  2. Modulr sends the Webhook - Upcoming Collection Credit at 4:45PM to tell the Partners that funds will arrive in their account tomorrow.

Day 3:
The funds are debited from the Paying bank regardless if the customer has any sufficient funds or not.

  1. Modulr receives the funds from the Paying Bank and transfers the funds into the Partner's account at 03:00 AM to 07:00AM.
  2. When Modulr credits the funds into the Partner's account, we send the PayIn Webhook to notify them.

Day 5:

  1. Modulr sets the collection's status to "Success", if the collection does not receive an ARUDD(Automated Return of Unpaid Direct Debits Service).

Unhappy Path
ARUDDs are messages to tell Modulr that a collection was unsuccessful due to a variety of reasons (i.e. Insufficient funds, no DDI, and more). It will trigger the process of returning funds to the Paying bank on Day 4 and Day 5.

Day 3:

  1. Modulr receives the funds from the Paying Bank and transfers the funds into the Partner's account at 03:00 AM to 07:00AM.
  2. When Modulr credits the funds into the Partner's account, we send the Webhook - Inbound Payments to notify them.
  3. The Paying bank generates an ARUDDs file against a collection and sends the file to the Scheme.

Day 4:

  1. The scheme processes the ARUDD file and tells Modulr that a collection has an ARUDDs.
  2. Modulr sends Webhook - Direct Debit, DD Collection Status to our Partner informing them of the failed collection at 10:15 AM.

Day 5:

  1. Modulr debits the Partner's account and returns the amount to the Paying bank. The collection’s status is “Failed”.

Late Unhappy Collections
In the vast majority of cases, the Paying Bank sends an ARUDD on Day 3. However, in a minority of cases they send the ARUDD on Day 4. The process will be similar to the unhappy collection but will start at Day 4 where the Paying bank generates the file and sends to the scheme and so on.

Updates on Collection progress
Modulr provides a GET /collections endpoint which will give the Partner a list of collection activities related to an account, these will account for collections and any indemnities.

Collection Statuses

  • Scheduled - Collection Request is created and waiting to be sent to BACS.
  • Processing - Collection Request has been sent to BACS.
  • Success - Collection has not received an ARUDDs and on Day 5, we consider them a successful collection.
  • Cancelled - Partner cancels the collection request.
  • Failed - Partner cancels the collections request or collection is failed because the reason was not representable.
  • Representable - Upon receiving an ARUDDs, BACS tells Modulr if the collection can be retried.
  • Represented - Partner retries on a representable collection.

Representable means a failed collection can be retried for one time within 30 days of the due date

APIs and Webhooks related to Collections

Create Collection Schedule API -
Get All Collection Schedule API -
Get All Collection Activities of an account API -
Cancel Collection Request API -

PAYIN Webhook -


Creating your first mandate on the Sandbox
Once set up, the first logical step is to try to use the POST /accounts/{id}/mandates endpoint to create a mandate. Typically, when you have built your user interface, your app will be using this endpoint to send through the information to Modulr that was entered by your customers in your mandate form.

Please note that reference for each mandate needs to be provided. This will be the reference lodged with BACS scheme.

Reference field requirements are:

  • Must be between 6 and 10 characters long, inclusive. May only contain alphanumeric characters.
  • Must be unique.
  • Only upper case characters are allowed, so any alphabetic characters supplied in this string will be converted to upper case before processing.

Once set up with access to Sandbox, you will be able start looking at integrating with the Modulr Direct Debit Collection endpoints.

To arrive at this point we assume you have:

  • Been onboarded as a customer on Sandbox. As part of this have a collection account set up as well as a general account and users set up that can access Direct Debit Collections. For help contact us.
  • Worked out how to securely connect to the Modulr API using the credentials you received in the onboarding process.

Mocking collection activity
Since there are no actual collections on Sandbox, there needs to be some way to test the integration. In order to achieve this we have a Sandbox-only endpoint, POST /external-services-mock/collections, that allows you to add the required collections and then call GET /collections to retrieve the expected collection activity.

An example would be that a request using POST /external-services-mock/collections, such as:

      "activityDate": "2020-06-25",
      "amount": 50.00,
      "collectionScheduleBid": "Q120026P",
      "customerReference" :  "DDI12347",
      "originalActivityDate": "2020-06-25",
      "reconciliationReference" : 14,
      "reconciliationDate" : "2020-06-25",
      "status" : "H",
      "type": "COLLECTION",
      "payerName": "Arakere"

Things to note:
The dates in the call should be tomorrow's date, or date for which you will attempt to GET collections. We process mocked collections on daily schedule. I.e. if you create a mock call today, you will be able to retrieve the collections through the GET call tomorrow.

Please note:

  • There can only be 1 collection for a given combination of activityDate & customerReference
  • collectionScheduleBid should be a valid schedule ID ("Q Id"), in a format of Qxxxxxxx
  • customerReference should be a valid mandate customer reference and mandate should be ACTIVE
  • status: Valid statuses are “H” Success, “F” Failed
  • activityDate must be the currentDate, if the GET call has to return the collection

The aforementioned POST request would then produce, when calling GET /collections, the following response:

      "activityDate": "2018-01-09",
      "amount": 100,
      "collectionScheduleId": "Q9200001",
      "mandateId": "G0000001",
      "message": "Instruction Cancelled",
      "originalActivityDate": "2021-01-09",
      "payerName": "Mr John Doe",
      "reconciliationDate": "2021-01-09",
      "reconciliationReference": "2021-01-09",
      "status": "FAILED",
      "type": "COLLECTION"


Sandbox and Direct Debit collection endpoints

Please note that in the Sandbox environment we do not connect to the Direct Debit scheme, as this is just a test environment. In Sandbox we do offer the ability to use all the endpoints available in our production environment, but some of these need to have data set up by you prior to using them. How to do this is detailed below.



How are returned direct debits treated?

If there is a collection failure due to any reason (such as insufficient funds), you will know the next working day via Webhook - Direct Debit, DD Collection Status after the funds has been credited to your account.

On rare occasions, you might be made aware of a rejected one more day later. This is referred to as a "late cancellation" and is deemed an exceptional scenario, but one that the BACS scheme allows to happen. The funds of that return will be deducted from the settlement account.


There is no longer any paperwork involved, this is all automated. Correct?



What are the timelines of Mandate and Collection creation?

Please see the image above (A Mandate takes 4 working days to set up from the time the API call is posted on the Modulr platform. A collection can happen at the soonest 2 days after requested on the platform. Therefore the first collection can be a minimum of 6 working days from the Mandate request.)


Can we submit Direct Debit requests via file?

That is not a supported method (You can build a UI that enables the upload of a file that then parses it, and then connects to our API if you like, but Modulr will not support the UI.


When are collection funds available in the Modulr collection account?

We credit the funds into the Partner's account after two working days from the collection request.


What types of checks are done/guarantees required to be a DD customer?

We already do checks on our clients and the people involved and no further checks are needed to be able to use DD collections. There is a separate onboarding process where your Direct Debit collection experience is verified and a SUN is provided.


How do I get notification of cancelled or amended collections?

As part of the activity is response to GET /collections


Can we transfer our current SUN?

We can work with your current provider to transfer ownership of the SUN. If we can't transfer ownership of your existing SUN to Modulr, we can set up one of our own SUNs and migrate your existing Direct Debit Instructions over.


What is the indemnity claim process?

You should contact Modulr customer services (after having found out about the indemnity via email) to challenge the claim. Modulr will then pass on to the Direct Debit scheme.


Is the Direct Debit collection account only able to be used for Direct Debit collections?

Technically the account is a Faster Payments account that has the Direct Debit collection product added to it, and the collection payments are actually Faster Payments. Also payments out would be Faster Payments and can be made as needed. Payments in should be restricted to DD collections as otherwise other payments will confuse any reconciliation. If you need another way to get funds, e.g. for customers to make non DD ad-hoc payments, then you should create other accounts for that purpose (ideally one per one of your customers).


Are custom schedules (different amounts per collection) available?

Yes, but not in the same collection schedule; to collect a different amount you will need to set up a new scheduled collection for each different amount under the same mandate. Alternatively, the collection amount could amended as required ahead of the collection date.


How do you handle retries?

If a collection should fail for certain reasons, the transaction status will be updated to 'REPRESENTABLE from the Webhook - Direct Debit, DD Collection Status.
Currently we are unable to represent failed collections, this functionality will be available in the future.


When does collection activity get updated?

We get activity updated at 10:30AM every working day.

What’s Next