diff --git a/packages/api/src/router/allocation-assignment-mutations.ts b/packages/api/src/router/allocation-assignment-mutations.ts
new file mode 100644
index 0000000..96c6d06
--- /dev/null
+++ b/packages/api/src/router/allocation-assignment-mutations.ts
@@ -0,0 +1,318 @@
+import {
+  buildSplitAllocationReadModel,
+  createAssignment,
+  createDemandRequirement,
+  deleteAllocationEntry,
+  deleteAssignment,
+  loadAllocationEntry,
+  updateAllocationEntry,
+  updateAssignment,
+} from "@capakraken/application";
+import type { PrismaClient } from "@capakraken/db";
+import {
+  AllocationStatus,
+  CreateAllocationSchema,
+  UpdateAllocationSchema,
+} from "@capakraken/shared";
+import { TRPCError } from "@trpc/server";
+import { z } from "zod";
+import { findUniqueOrThrow } from "../db/helpers.js";
+import { ASSIGNMENT_INCLUDE, toIsoDate } from "./allocation-shared.js";
+import {
+  findAllocationEntryOrNull,
+  toAssignmentUpdateInput,
+  toDemandRequirementUpdateInput,
+} from "./allocation-support.js";
+
+type AllocationMutationDb = Pick<
+  PrismaClient,
+  "$transaction" | "assignment" | "demandRequirement" | "resource" | "auditLog"
+>;
+
+type CreateAllocationInput = z.infer<typeof CreateAllocationSchema>;
+type UpdateAllocationInput = z.infer<typeof UpdateAllocationSchema>;
+
+type EnsureAssignmentInput = {
+  resourceId: string;
+  projectId: string;
+  startDate: Date;
+  endDate: Date;
+  hoursPerDay: number;
+  role?: string | undefined;
+};
+
+export async function createAllocationReadModelEntry(
+  tx: Parameters<typeof createAssignment>[0],
+  input: CreateAllocationInput,
+) {
+  if (!input.resourceId) {
+    const demandRequirement = await createDemandRequirement(
+      tx as Parameters<typeof createDemandRequirement>[0],
+      {
+        projectId: input.projectId,
+        startDate: input.startDate,
+        endDate: input.endDate,
+        hoursPerDay: input.hoursPerDay,
+        percentage: input.percentage,
+        role: input.role,
+        roleId: input.roleId,
+        headcount: input.headcount,
+        status: input.status,
+        metadata: input.metadata,
+      },
+    );
+
+    return buildSplitAllocationReadModel({
+      demandRequirements: [demandRequirement],
+      assignments: [],
+    }).allocations[0]!;
+  }
+
+  const assignment = await createAssignment(
+    tx,
+    {
+      resourceId: input.resourceId,
+      projectId: input.projectId,
+      startDate: input.startDate,
+      endDate: input.endDate,
+      hoursPerDay: input.hoursPerDay,
+      percentage: input.percentage,
+      role: input.role,
+      roleId: input.roleId,
+      status: input.status,
+      metadata: input.metadata,
+    },
+  );
+
+  return buildSplitAllocationReadModel({
+    demandRequirements: [],
+    assignments: [assignment],
+  }).allocations[0]!;
+}
+
+export async function ensureAssignmentRecord(
+  db: Pick<PrismaClient, "$transaction" | "assignment" | "resource">,
+  input: EnsureAssignmentInput,
+) {
+  const existing = (await db.assignment.findMany({
+    where: {
+      resourceId: input.resourceId,
+      projectId: input.projectId,
+    },
+    include: ASSIGNMENT_INCLUDE,
+    orderBy: { startDate: "asc" },
+  })).find((assignment) => (
+    toIsoDate(assignment.startDate) === toIsoDate(input.startDate)
+    && toIsoDate(assignment.endDate) === toIsoDate(input.endDate)
+  ));
+
+  if (existing) {
+    if (existing.status !== AllocationStatus.CANCELLED) {
+      throw new TRPCError({
+        code: "CONFLICT",
+        message: `An allocation already exists for this resource/project/dates with status ${existing.status}.`,
+      });
+    }
+
+    const resource = await db.resource.findUnique({
+      where: { id: input.resourceId },
+      select: { lcrCents: true },
+    });
+    if (!resource) {
+      throw new TRPCError({ code: "NOT_FOUND", message: "Resource not found" });
+    }
+
+    const updated = await db.$transaction(async (tx) => updateAssignment(
+      tx as Parameters<typeof updateAssignment>[0],
+      existing.id,
+      {
+        status: AllocationStatus.PROPOSED,
+        hoursPerDay: input.hoursPerDay,
+        percentage: (input.hoursPerDay / 8) * 100,
+        dailyCostCents: Math.round(resource.lcrCents * input.hoursPerDay),
+        ...(input.role ? { role: input.role } : {}),
+      },
+    ));
+
+    return { assignment: updated, action: "reactivated" as const };
+  }
+
+  const assignment = await db.$transaction(async (tx) => createAssignment(
+    tx as Parameters<typeof createAssignment>[0],
+    {
+      resourceId: input.resourceId,
+      projectId: input.projectId,
+      startDate: input.startDate,
+      endDate: input.endDate,
+      hoursPerDay: input.hoursPerDay,
+      percentage: (input.hoursPerDay / 8) * 100,
+      status: AllocationStatus.PROPOSED,
+      metadata: {},
+      ...(input.role ? { role: input.role } : {}),
+    },
+  ));
+
+  return { assignment, action: "created" as const };
+}
+
+export async function updateAllocationWithAudit(
+  db: AllocationMutationDb,
+  id: string,
+  data: UpdateAllocationInput,
+) {
+  const existing = await loadAllocationEntry(db, id);
+  const updated = await db.$transaction(async (tx) => {
+    const { allocation: updatedAllocation } = await updateAllocationEntry(
+      tx as Parameters<typeof updateAllocationEntry>[0],
+      {
+        id,
+        demandRequirementUpdate:
+          existing.kind === "assignment" ? {} : toDemandRequirementUpdateInput(data),
+        assignmentUpdate:
+          existing.kind === "demand" ? {} : toAssignmentUpdateInput(data),
+      },
+    );
+
+    await tx.auditLog.create({
+      data: {
+        entityType: "Allocation",
+        entityId: id,
+        action: "UPDATE",
+        changes: {
+          before: existing.entry,
+          after: updatedAllocation,
+        } as unknown as import("@capakraken/db").Prisma.InputJsonValue,
+      },
+    });
+
+    return updatedAllocation;
+  });
+
+  return { existing, updated };
+}
+
+export async function deleteAssignmentWithAudit(
+  db: AllocationMutationDb,
+  id: string,
+) {
+  const existing = await findUniqueOrThrow(
+    db.assignment.findUnique({
+      where: { id },
+      include: ASSIGNMENT_INCLUDE,
+    }),
+    "Assignment",
+  );
+
+  await db.$transaction(async (tx) => {
+    await deleteAssignment(
+      tx as Parameters<typeof deleteAssignment>[0],
+      id,
+    );
+
+    await tx.auditLog.create({
+      data: {
+        entityType: "Assignment",
+        entityId: id,
+        action: "DELETE",
+        changes: { before: existing } as unknown as import("@capakraken/db").Prisma.InputJsonValue,
+      },
+    });
+  });
+
+  return existing;
+}
+
+export async function deleteAllocationWithAudit(
+  db: AllocationMutationDb,
+  id: string,
+) {
+  const existing = await loadAllocationEntry(db, id);
+
+  await db.$transaction(async (tx) => {
+    await deleteAllocationEntry(
+      tx as Parameters<typeof deleteAllocationEntry>[0],
+      existing,
+    );
+
+    await tx.auditLog.create({
+      data: {
+        entityType: "Allocation",
+        entityId: id,
+        action: "DELETE",
+        changes: { before: existing.entry } as unknown as import("@capakraken/db").Prisma.InputJsonValue,
+      },
+    });
+  });
+
+  return existing;
+}
+
+export async function batchDeleteAllocationsWithAudit(
+  db: AllocationMutationDb,
+  ids: string[],
+) {
+  const existing = (
+    await Promise.all(ids.map(async (id) => findAllocationEntryOrNull(db, id)))
+  ).filter((entry): entry is NonNullable<typeof entry> => Boolean(entry));
+
+  await db.$transaction(async (tx) => {
+    for (const allocation of existing) {
+      await deleteAllocationEntry(
+        tx as Parameters<typeof deleteAllocationEntry>[0],
+        allocation,
+      );
+    }
+
+    await tx.auditLog.create({
+      data: {
+        entityType: "Allocation",
+        entityId: ids.join(","),
+        action: "DELETE",
+        changes: {
+          before: existing.map((allocation) => ({
+            id: allocation.entry.id,
+            projectId: allocation.projectId,
+          })),
+        } as unknown as import("@capakraken/db").Prisma.InputJsonValue,
+      },
+    });
+  });
+
+  return existing;
+}
+
+export async function batchUpdateAllocationStatusWithAudit(
+  db: AllocationMutationDb,
+  input: {
+    ids: string[];
+    status: AllocationStatus;
+  },
+) {
+  const updated = await db.$transaction(async (tx) => {
+    const updatedAllocations = await Promise.all(
+      input.ids.map(async (id) => (
+        await updateAllocationEntry(
+          tx as Parameters<typeof updateAllocationEntry>[0],
+          {
+            id,
+            demandRequirementUpdate: { status: input.status },
+            assignmentUpdate: { status: input.status },
+          },
+        )
+      ).allocation),
+    );
+
+    return updatedAllocations;
+  });
+
+  await db.auditLog.create({
+    data: {
+      entityType: "Allocation",
+      entityId: input.ids.join(","),
+      action: "UPDATE",
+      changes: { after: { status: input.status, ids: input.ids } },
+    },
+  });
+
+  return updated;
+}
diff --git a/packages/api/src/router/allocation-assignment-procedures.ts b/packages/api/src/router/allocation-assignment-procedures.ts
index 932574f..76ab59f 100644
--- a/packages/api/src/router/allocation-assignment-procedures.ts
+++ b/packages/api/src/router/allocation-assignment-procedures.ts
@@ -1,11 +1,5 @@
 import {
-  buildSplitAllocationReadModel,
   createAssignment,
-  createDemandRequirement,
-  deleteAllocationEntry,
-  deleteAssignment,
-  loadAllocationEntry,
-  updateAllocationEntry,
   updateAssignment,
 } from "@capakraken/application";
 import {
@@ -16,7 +10,6 @@ import {
   UpdateAllocationSchema,
   UpdateAssignmentSchema,
 } from "@capakraken/shared";
-import { TRPCError } from "@trpc/server";
 import { z } from "zod";
 import { findUniqueOrThrow } from "../db/helpers.js";
 import {
@@ -27,14 +20,14 @@ import {
   publishBatchAllocationStatusUpdates,
 } from "./allocation-assignment-effects.js";
 import {
-  ASSIGNMENT_INCLUDE,
-  toIsoDate,
-} from "./allocation-shared.js";
-import {
-  findAllocationEntryOrNull,
-  toAssignmentUpdateInput,
-  toDemandRequirementUpdateInput,
-} from "./allocation-support.js";
+  batchDeleteAllocationsWithAudit,
+  batchUpdateAllocationStatusWithAudit,
+  createAllocationReadModelEntry,
+  deleteAllocationWithAudit,
+  deleteAssignmentWithAudit,
+  ensureAssignmentRecord,
+  updateAllocationWithAudit,
+} from "./allocation-assignment-mutations.js";
 import {
   managerProcedure,
   requirePermission,
@@ -45,51 +38,11 @@ export const allocationAssignmentProcedures = {
     .input(CreateAllocationSchema)
     .mutation(async ({ ctx, input }) => {
       requirePermission(ctx, PermissionKey.MANAGE_ALLOCATIONS);
-      const allocation = await ctx.db.$transaction(async (tx) => {
-        if (!input.resourceId) {
-          const demandRequirement = await createDemandRequirement(
-            tx as unknown as Parameters<typeof createDemandRequirement>[0],
-            {
-              projectId: input.projectId,
-              startDate: input.startDate,
-              endDate: input.endDate,
-              hoursPerDay: input.hoursPerDay,
-              percentage: input.percentage,
-              role: input.role,
-              roleId: input.roleId,
-              headcount: input.headcount,
-              status: input.status,
-              metadata: input.metadata,
-            },
-          );
-
-          return buildSplitAllocationReadModel({
-            demandRequirements: [demandRequirement],
-            assignments: [],
-          }).allocations[0]!;
-        }
-
-        const assignment = await createAssignment(
-          tx as unknown as Parameters<typeof createAssignment>[0],
-          {
-            resourceId: input.resourceId,
-            projectId: input.projectId,
-            startDate: input.startDate,
-            endDate: input.endDate,
-            hoursPerDay: input.hoursPerDay,
-            percentage: input.percentage,
-            role: input.role,
-            roleId: input.roleId,
-            status: input.status,
-            metadata: input.metadata,
-          },
-        );
-
-        return buildSplitAllocationReadModel({
-          demandRequirements: [],
-          assignments: [assignment],
-        }).allocations[0]!;
-      });
+      const allocation = await ctx.db.$transaction(async (tx) =>
+        createAllocationReadModelEntry(
+          tx as Parameters<typeof createAssignment>[0],
+          input,
+        ));
 
       publishAllocationCreated(ctx.db, {
         id: allocation.id,
@@ -131,78 +84,25 @@ export const allocationAssignmentProcedures = {
     }))
     .mutation(async ({ ctx, input }) => {
       requirePermission(ctx, PermissionKey.MANAGE_ALLOCATIONS);
+      const result = await ensureAssignmentRecord(ctx.db, input);
 
-      const existing = (await ctx.db.assignment.findMany({
-        where: {
-          resourceId: input.resourceId,
-          projectId: input.projectId,
-        },
-        include: ASSIGNMENT_INCLUDE,
-        orderBy: { startDate: "asc" },
-      })).find((assignment) => (
-        toIsoDate(assignment.startDate) === toIsoDate(input.startDate)
-        && toIsoDate(assignment.endDate) === toIsoDate(input.endDate)
-      ));
-
-      if (existing) {
-        if (existing.status !== AllocationStatus.CANCELLED) {
-          throw new TRPCError({
-            code: "CONFLICT",
-            message: `An allocation already exists for this resource/project/dates with status ${existing.status}.`,
-          });
-        }
-
-        const resource = await ctx.db.resource.findUnique({
-          where: { id: input.resourceId },
-          select: { lcrCents: true },
-        });
-        if (!resource) {
-          throw new TRPCError({ code: "NOT_FOUND", message: "Resource not found" });
-        }
-
-        const updated = await ctx.db.$transaction(async (tx) => updateAssignment(
-          tx as unknown as Parameters<typeof updateAssignment>[0],
-          existing.id,
-          {
-            status: AllocationStatus.PROPOSED,
-            hoursPerDay: input.hoursPerDay,
-            percentage: (input.hoursPerDay / 8) * 100,
-            dailyCostCents: Math.round(resource.lcrCents * input.hoursPerDay),
-            ...(input.role ? { role: input.role } : {}),
-          },
-        ));
-
+      if (result.action === "reactivated") {
         publishAllocationUpdated(ctx.db, {
-          id: updated.id,
-          projectId: updated.projectId,
-          resourceId: updated.resourceId,
+          id: result.assignment.id,
+          projectId: result.assignment.projectId,
+          resourceId: result.assignment.resourceId,
         }, { dispatchWebhook: true });
 
-        return { assignment: updated, action: "reactivated" as const };
+        return result;
       }
 
-      const assignment = await ctx.db.$transaction(async (tx) => createAssignment(
-        tx as unknown as Parameters<typeof createAssignment>[0],
-        {
-          resourceId: input.resourceId,
-          projectId: input.projectId,
-          startDate: input.startDate,
-          endDate: input.endDate,
-          hoursPerDay: input.hoursPerDay,
-          percentage: (input.hoursPerDay / 8) * 100,
-          status: AllocationStatus.PROPOSED,
-          metadata: {},
-          ...(input.role ? { role: input.role } : {}),
-        },
-      ));
-
       publishAllocationCreated(ctx.db, {
-        id: assignment.id,
-        projectId: assignment.projectId,
-        resourceId: assignment.resourceId,
+        id: result.assignment.id,
+        projectId: result.assignment.projectId,
+        resourceId: result.assignment.resourceId,
       });
 
-      return { assignment, action: "created" as const };
+      return result;
     }),
 
   updateAssignment: managerProcedure
@@ -239,34 +139,7 @@ export const allocationAssignmentProcedures = {
     .input(z.object({ id: z.string(), data: UpdateAllocationSchema }))
     .mutation(async ({ ctx, input }) => {
       requirePermission(ctx, PermissionKey.MANAGE_ALLOCATIONS);
-      const existing = await loadAllocationEntry(ctx.db, input.id);
-
-      const updated = await ctx.db.$transaction(async (tx) => {
-        const { allocation: updatedAllocation } = await updateAllocationEntry(
-          tx as unknown as Parameters<typeof updateAllocationEntry>[0],
-          {
-            id: input.id,
-            demandRequirementUpdate:
-              existing.kind === "assignment" ? {} : toDemandRequirementUpdateInput(input.data),
-            assignmentUpdate:
-              existing.kind === "demand" ? {} : toAssignmentUpdateInput(input.data),
-          },
-        );
-
-        await tx.auditLog.create({
-          data: {
-            entityType: "Allocation",
-            entityId: input.id,
-            action: "UPDATE",
-            changes: {
-              before: existing.entry,
-              after: updatedAllocation,
-            } as unknown as import("@capakraken/db").Prisma.InputJsonValue,
-          },
-        });
-
-        return updatedAllocation;
-      });
+      const { existing, updated } = await updateAllocationWithAudit(ctx.db, input.id, input.data);
 
       const affectedResourceIds = [existing.entry.resourceId, updated.resourceId].filter(
         (resourceId): resourceId is string => Boolean(resourceId),
@@ -286,30 +159,7 @@ export const allocationAssignmentProcedures = {
     .input(z.object({ id: z.string() }))
     .mutation(async ({ ctx, input }) => {
       requirePermission(ctx, PermissionKey.MANAGE_ALLOCATIONS);
-
-      const existing = await findUniqueOrThrow(
-        ctx.db.assignment.findUnique({
-          where: { id: input.id },
-          include: ASSIGNMENT_INCLUDE,
-        }),
-        "Assignment",
-      );
-
-      await ctx.db.$transaction(async (tx) => {
-        await deleteAssignment(
-          tx as unknown as Parameters<typeof deleteAssignment>[0],
-          input.id,
-        );
-
-        await tx.auditLog.create({
-          data: {
-            entityType: "Assignment",
-            entityId: input.id,
-            action: "DELETE",
-            changes: { before: existing } as unknown as import("@capakraken/db").Prisma.InputJsonValue,
-          },
-        });
-      });
+      const existing = await deleteAssignmentWithAudit(ctx.db, input.id);
 
       publishAllocationDeleted(ctx.db, {
         id: existing.id,
@@ -324,23 +174,7 @@ export const allocationAssignmentProcedures = {
     .input(z.object({ id: z.string() }))
     .mutation(async ({ ctx, input }) => {
       requirePermission(ctx, PermissionKey.MANAGE_ALLOCATIONS);
-      const existing = await loadAllocationEntry(ctx.db, input.id);
-
-      await ctx.db.$transaction(async (tx) => {
-        await deleteAllocationEntry(
-          tx as unknown as Parameters<typeof deleteAllocationEntry>[0],
-          existing,
-        );
-
-        await tx.auditLog.create({
-          data: {
-            entityType: "Allocation",
-            entityId: input.id,
-            action: "DELETE",
-            changes: { before: existing.entry } as unknown as import("@capakraken/db").Prisma.InputJsonValue,
-          },
-        });
-      });
+      const existing = await deleteAllocationWithAudit(ctx.db, input.id);
 
       publishAllocationDeleted(ctx.db, {
         id: existing.entry.id,
@@ -355,31 +189,7 @@ export const allocationAssignmentProcedures = {
     .input(z.object({ ids: z.array(z.string()).min(1).max(100) }))
     .mutation(async ({ ctx, input }) => {
       requirePermission(ctx, PermissionKey.MANAGE_ALLOCATIONS);
-      const existing = (
-        await Promise.all(input.ids.map(async (id) => findAllocationEntryOrNull(ctx.db, id)))
-      ).filter((entry): entry is NonNullable<typeof entry> => Boolean(entry));
-
-      await ctx.db.$transaction(async (tx) => {
-        for (const allocation of existing) {
-          await deleteAllocationEntry(
-            tx as unknown as Parameters<typeof deleteAllocationEntry>[0],
-            allocation,
-          );
-        }
-        await tx.auditLog.create({
-          data: {
-            entityType: "Allocation",
-            entityId: input.ids.join(","),
-            action: "DELETE",
-            changes: {
-              before: existing.map((allocation) => ({
-                id: allocation.entry.id,
-                projectId: allocation.projectId,
-              })),
-            } as unknown as import("@capakraken/db").Prisma.InputJsonValue,
-          },
-        });
-      });
+      const existing = await batchDeleteAllocationsWithAudit(ctx.db, input.ids);
 
       publishBatchAllocationDeletes(ctx.db, existing.map((allocation) => ({
         id: allocation.entry.id,
@@ -399,33 +209,7 @@ export const allocationAssignmentProcedures = {
     )
     .mutation(async ({ ctx, input }) => {
       requirePermission(ctx, PermissionKey.MANAGE_ALLOCATIONS);
-      const updated = await ctx.db.$transaction(async (tx) => {
-        const updatedAllocations = await Promise.all(
-          input.ids.map(async (id) =>
-            (
-              await updateAllocationEntry(
-                tx as unknown as Parameters<typeof updateAllocationEntry>[0],
-                {
-                  id,
-                  demandRequirementUpdate: { status: input.status },
-                  assignmentUpdate: { status: input.status },
-                },
-              )
-            ).allocation,
-          ),
-        );
-
-        return updatedAllocations;
-      });
-
-      await ctx.db.auditLog.create({
-        data: {
-          entityType: "Allocation",
-          entityId: input.ids.join(","),
-          action: "UPDATE",
-          changes: { after: { status: input.status, ids: input.ids } },
-        },
-      });
+      const updated = await batchUpdateAllocationStatusWithAudit(ctx.db, input);
 
       publishBatchAllocationStatusUpdates(ctx.db, updated.map((allocation) => ({
         id: allocation.id,