102a8603-26df-462f-a56d-01cee292f6f6

prisma/schema.prisma

@@ -264,6 +264,7 @@ model Invoice {
   createdAt   DateTime @default(now())
   updatedAt   DateTime @updatedAt
   lines       InvoiceLine[]
+  dunningRuns DunningRun[]
 }
 
 model InvoiceLine {
@@ -412,4 +413,65 @@ model EstimateLine {
   totalCents  Int
 }
 
+// ---------------------------------------------------------------------------
+// Accounting / Buchhaltung (adapted from Haben, German-law compliant)
+// VAT return (Umsatzsteuer-Voranmeldung), EÜR, bank reconciliation, dunning.
+// PRD §6.6: double-entry + ELSTER out of scope; this covers the agency-facing
+// compliance layer (compute, validate, mock-submit) + bank matching.
+// ---------------------------------------------------------------------------
+
+// Bank transactions imported from CAMT.053 or PSD2 (FinTS).
+model BankTransaction {
+  id            String   @id @default(cuid())
+  amountCents   Int      // signed: + credit (incoming), - debit (outgoing)
+  bookingDate   DateTime
+  valueDate     DateTime
+  partnerName   String?
+  partnerIban   String?
+  reference     String?
+  purpose       String?
+  matchedInvoiceId String?
+  matchedStatus String   @default("unmatched")
+  matchReason   String?
+  importBatchId String?
+  importedAt    DateTime @default(now())
+  createdAt     DateTime @default(now())
+}
+
+// VAT pre-registration periods (Umsatzsteuer-Voranmeldung)
+model VatReturn {
+  id            String   @id @default(cuid())
+  periodYear    Int
+  periodMonth   Int
+  periodType    String   @default("monthly")
+  status        String   @default("draft")
+  k81StandardNetCents  Int @default(0)
+  k86ReducedNetCents   Int @default(0)
+  k66TaxFreeCents      Int @default(0)
+  k83TaxStandardCents  Int @default(0)
+  k65TaxReducedCents   Int @default(0)
+  k37InputTaxCents     Int @default(0)
+  outputTaxCents   Int  @default(0)
+  inputTaxCents    Int  @default(0)
+  payableCents     Int  @default(0)
+  submittedAt   DateTime?
+  elsterRef     String?
+  acceptedAt    DateTime?
+  notes         String?
+  createdAt     DateTime @default(now())
+  updatedAt     DateTime @updatedAt
+}
+
+// Dunning levels for overdue invoices (Mahnwesen)
+model DunningRun {
+  id            String   @id @default(cuid())
+  invoiceId     String
+  invoice       Invoice  @relation(fields: [invoiceId], references: [id])
+  level         Int
+  status        String   @default("sent")
+  feesCents     Int      @default(0)
+  sentAt        DateTime @default(now())
+  createdAt     DateTime @default(now())
+}
+