Create year-end DLA snapshot with S455 and BiK calculations

POST https://app.speybooks.com/api/v1/director-loans/snapshot

Creates a year-end DLA snapshot capturing the balance, S455 exposure, and BiK calculation for a specific director at the period end date.

The BiK is calculated at HMRC's official interest rate on the average overdrawn balance. S455 deadline is set to 9 months + 1 day after the period end.

Request Fields

  • directorId — prefixed director ID (required)
  • periodEndDate — YYYY-MM-DD (required)

Body parameters

directorId string optional
Director ID (e.g. dir_1).
periodEndDate string optional
Accounting period end date (YYYY-MM-DD). Used to calculate the closing balance and S455 deadline.
date

Response

201 Snapshot created with S455 exposure, BiK calculation, and P11D deadline.
Show response fields
snapshotId string

Error codes

400 Validation error or invalid director ID.
404 Director not found.
409 Snapshot already exists for this director and period end date.