diff --git a/packages/shared/src/workspaces/helpers/plans.spec.ts b/packages/shared/src/workspaces/helpers/plans.spec.ts
index 3e318b1bc..306bbbdda 100644
--- a/packages/shared/src/workspaces/helpers/plans.spec.ts
+++ b/packages/shared/src/workspaces/helpers/plans.spec.ts
@@ -1,28 +1,93 @@
 import { describe, expect, it } from 'vitest'
-import { isNewWorkspacePlan, WorkspacePlans } from './plans.js'
+import {
+  doesPlanIncludeUnlimitedProjectsAddon,
+  isNewWorkspacePlan,
+  isSelfServeAvailablePlan,
+  WorkspacePlans
+} from './plans.js'
 
-describe('isNewWorkspacePlan', () => {
-  const planCases: {
-    [P in WorkspacePlans]: boolean
-  } = <const>{
-    business: false,
-    businessInvoiced: false,
-    plus: false,
-    plusInvoiced: false,
-    starter: false,
-    starterInvoiced: false,
-    free: true,
-    academia: true,
-    unlimited: true,
-    pro: true,
-    proUnlimited: true,
-    proUnlimitedInvoiced: true,
-    team: true,
-    teamUnlimited: true,
-    teamUnlimitedInvoiced: true
-  }
-  it.each(Object.entries(planCases))('plan %s is new type -> %s', (plan, isNew) => {
-    const result = isNewWorkspacePlan(plan as WorkspacePlans)
-    expect(result).toStrictEqual(isNew)
+describe('plan helpers', () => {
+  describe('isNewWorkspacePlan', () => {
+    const planCases: {
+      [P in WorkspacePlans]: boolean
+    } = <const>{
+      business: false,
+      businessInvoiced: false,
+      plus: false,
+      plusInvoiced: false,
+      starter: false,
+      starterInvoiced: false,
+      free: true,
+      academia: true,
+      unlimited: true,
+      pro: true,
+      proUnlimited: true,
+      proUnlimitedInvoiced: true,
+      team: true,
+      teamUnlimited: true,
+      teamUnlimitedInvoiced: true
+    }
+    it.each(Object.entries(planCases))('plan %s is new type -> %s', (plan, isNew) => {
+      const result = isNewWorkspacePlan(plan as WorkspacePlans)
+      expect(result).toStrictEqual(isNew)
+    })
+  })
+
+  describe('doesPlanIncludeUnlimitedProjectsAddon', () => {
+    const planCases: {
+      [P in WorkspacePlans]: boolean
+    } = <const>{
+      business: false,
+      businessInvoiced: false,
+      plus: false,
+      plusInvoiced: false,
+      starter: false,
+      starterInvoiced: false,
+      free: false,
+      academia: false,
+      unlimited: false,
+      pro: false,
+      proUnlimited: true,
+      proUnlimitedInvoiced: false,
+      team: false,
+      teamUnlimited: true,
+      teamUnlimitedInvoiced: false
+    }
+    it.each(Object.entries(planCases))(
+      'plan %s include the paid unlimited projects addon -> %s',
+      (plan, isNew) => {
+        const result = doesPlanIncludeUnlimitedProjectsAddon(plan as WorkspacePlans)
+        expect(result).toStrictEqual(isNew)
+      }
+    )
+  })
+
+  describe('isSelfServeAvailablePlan', () => {
+    const planCases: {
+      [P in WorkspacePlans]: boolean
+    } = <const>{
+      business: false,
+      businessInvoiced: false,
+      plus: false,
+      plusInvoiced: false,
+      starter: false,
+      starterInvoiced: false,
+      free: true,
+      academia: false,
+      unlimited: false,
+      pro: true,
+      proUnlimited: true,
+      proUnlimitedInvoiced: false,
+      team: true,
+      teamUnlimited: true,
+      teamUnlimitedInvoiced: false
+    }
+    it.each(Object.entries(planCases))(
+      'is plan %s available self served -> %s',
+      (plan, isNew) => {
+        const result = isSelfServeAvailablePlan(plan as WorkspacePlans)
+        expect(result).toStrictEqual(isNew)
+      }
+    )
   })
 })
diff --git a/packages/shared/src/workspaces/helpers/plans.ts b/packages/shared/src/workspaces/helpers/plans.ts
index 1eb16ec3c..42f09a458 100644
--- a/packages/shared/src/workspaces/helpers/plans.ts
+++ b/packages/shared/src/workspaces/helpers/plans.ts
@@ -94,6 +94,58 @@ export const isNewWorkspacePlan = (
   }
 }
 
+export const doesPlanIncludeUnlimitedProjectsAddon = (
+  plan: WorkspacePlans
+): boolean => {
+  switch (plan) {
+    case 'teamUnlimited':
+    case 'proUnlimited':
+      return true
+    case 'free':
+    case 'team':
+    case 'pro':
+    case 'starter':
+    case 'plus':
+    case 'business':
+    case 'starterInvoiced':
+    case 'plusInvoiced':
+    case 'businessInvoiced':
+    case 'teamUnlimitedInvoiced':
+    case 'proUnlimitedInvoiced':
+    case 'unlimited':
+    case 'academia':
+      return false
+
+    default:
+      throwUncoveredError(plan)
+  }
+}
+
+export const isSelfServeAvailablePlan = (plan: WorkspacePlans): boolean => {
+  switch (plan) {
+    case 'free':
+    case 'team':
+    case 'teamUnlimited':
+    case 'pro':
+    case 'proUnlimited':
+      return true
+    case 'starter':
+    case 'plus':
+    case 'business':
+    case 'starterInvoiced':
+    case 'plusInvoiced':
+    case 'businessInvoiced':
+    case 'teamUnlimitedInvoiced':
+    case 'proUnlimitedInvoiced':
+    case 'unlimited':
+    case 'academia':
+      return false
+
+    default:
+      throwUncoveredError(plan)
+  }
+}
+
 /**
  * BILLING INTERVALS
  */