Set up and track your payments, within Sodium.
Clients sign the letter of engagement and set up their direct debit in one go, right inside your Sodium proposal.

How it works
Send the proposal from Sodium
Pick the client, add your services and send the proposal. Direct debit is on for every proposal from your settings, and you can switch it off for a client who already pays you.
Client signs and sets up payment
Your client reviews the proposal and pricing, signs the letter of engagement and goes straight on to set up their mandate with Adfin. It's one flow, and it works on their phone.
See it on the client record
The client is created in Adfin automatically. Their billing tab in Sodium shows the mandate, with a link straight through to Adfin.
Built into the Sodium workflow
Mandate at proposal
The direct debit is set up when the client signs, not chased down afterwards.
On by default
Switch direct debit on for every proposal in settings, or off for a single client.
Works on mobile
Clients can review, sign and set up their mandate from their phone.
Clients created for you
New clients appear in Adfin as they set up their mandate, with no re-keying.
Status on the record
The billing tab in Sodium shows the mandate, so the team knows payment is sorted before work starts.
Card on file
Take the first payment by card, so the work can start before the mandate is live, then use card as a fallback.
Works with Socket
Start in Socket and the client comes through to Sodium with the Adfin set-up already done.
Free retries
Up to three attempts on a failed direct debit, with a card link as backup. You're only charged for successful payments.
Works alongside Xero and QuickBooks
Sodium posts your invoices to Xero or QuickBooks. Adfin picks them up, collects payment and posts it back for reconciliation. Your ledger stays where it is, and the proposal, the mandate and the payment stay connected from start to finish. Here's how to set it up:















