From 5ca24f6c9c5a725846a4b9da0402d47e6f1d78ae Mon Sep 17 00:00:00 2001
From: Usman Baig <mubaig@pm.me>
Date: Fri, 27 Mar 2026 11:33:48 +0100
Subject: [PATCH] feat: add calculateVAT API function

---
 lib/api/billing.ts | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/lib/api/billing.ts b/lib/api/billing.ts
index 22c1391..01f25b5 100644
--- a/lib/api/billing.ts
+++ b/lib/api/billing.ts
@@ -102,6 +102,30 @@ export async function getOrders(): Promise<Order[]> {
   return apiRequest<Order[]>('/api/billing/invoices')
 }
 
+export interface VATResult {
+  base_amount: string
+  vat_rate: number
+  vat_amount: string
+  total_amount: string
+  vat_exempt: boolean
+  vat_reason: string
+}
+
+export interface CalculateVATParams {
+  plan_id: string
+  interval: string
+  limit: number
+  country: string
+  vat_id?: string
+}
+
+export async function calculateVAT(params: CalculateVATParams): Promise<VATResult> {
+  return apiRequest<VATResult>('/api/billing/calculate-vat', {
+    method: 'POST',
+    body: JSON.stringify(params),
+  })
+}
+
 export interface CreateEmbeddedCheckoutParams {
   plan_id: string
   interval: string