diff --git a/.changeset/tasty-foxes-work.md b/.changeset/tasty-foxes-work.md
new file mode 100644
index 000000000..cbd9b818b
--- /dev/null
+++ b/.changeset/tasty-foxes-work.md
@@ -0,0 +1,5 @@
+---
+'@shopify/shopify-api': minor
+---
+
+Add new trialDaysOverride parameter to billing.request, so that apps can override the default config value.
diff --git a/docs/reference/billing/request.md b/docs/reference/billing/request.md
index d948bf033..b33101121 100644
--- a/docs/reference/billing/request.md
+++ b/docs/reference/billing/request.md
@@ -136,6 +136,12 @@ Which URL to redirect the merchant to after the charge is confirmed.
 
 Whether to return the `confirmationUrl` as a `string`, or to return a more detailed object (see below).
 
+### trialDaysOverride
+
+`number`
+
+Override value for the `trialDays` config option. Only applies to recurring purchases.
+
 ## Return
 
 ### if `returnObject` parameter is `false` (default)
diff --git a/lib/billing/__tests__/request.test.ts b/lib/billing/__tests__/request.test.ts
index 57481eafa..54a483aa8 100644
--- a/lib/billing/__tests__/request.test.ts
+++ b/lib/billing/__tests__/request.test.ts
@@ -407,4 +407,72 @@ describe('shopify.billing.request', () => {
       });
     });
   });
+
+  it('applies trialDays override when set', async () => {
+    shopify = shopifyApi({
+      ...testConfig,
+      billing: {
+        [Responses.PLAN_1]: {
+          amount: 5,
+          currencyCode: 'USD',
+          interval: BillingInterval.Every30Days,
+          replacementBehavior: BillingReplacementBehavior.ApplyImmediately,
+          trialDays: 10,
+        },
+      },
+    });
+
+    queueMockResponses([Responses.PURCHASE_SUBSCRIPTION_RESPONSE]);
+
+    await shopify.billing.request({
+      session,
+      plan: Responses.PLAN_1,
+      returnObject: true,
+      trialDaysOverride: 20,
+    });
+
+    expect({
+      ...GRAPHQL_BASE_REQUEST,
+      data: {
+        query: expect.stringContaining('appSubscriptionCreate'),
+        variables: expect.objectContaining({
+          trialDays: 20,
+        }),
+      },
+    }).toMatchMadeHttpRequest();
+  });
+
+  it('applies a trialDays override of 0', async () => {
+    shopify = shopifyApi({
+      ...testConfig,
+      billing: {
+        [Responses.PLAN_1]: {
+          amount: 5,
+          currencyCode: 'USD',
+          interval: BillingInterval.Every30Days,
+          replacementBehavior: BillingReplacementBehavior.ApplyImmediately,
+          trialDays: 10,
+        },
+      },
+    });
+
+    queueMockResponses([Responses.PURCHASE_SUBSCRIPTION_RESPONSE]);
+
+    await shopify.billing.request({
+      session,
+      plan: Responses.PLAN_1,
+      returnObject: true,
+      trialDaysOverride: 0,
+    });
+
+    expect({
+      ...GRAPHQL_BASE_REQUEST,
+      data: {
+        query: expect.stringContaining('appSubscriptionCreate'),
+        variables: expect.objectContaining({
+          trialDays: 0,
+        }),
+      },
+    }).toMatchMadeHttpRequest();
+  });
 });
diff --git a/lib/billing/request.ts b/lib/billing/request.ts
index df37cf7ff..fc48e5534 100644
--- a/lib/billing/request.ts
+++ b/lib/billing/request.ts
@@ -29,6 +29,7 @@ interface RequestInternalParams {
 
 interface RequestSubscriptionInternalParams extends RequestInternalParams {
   billingConfig: BillingConfigSubscriptionPlan;
+  trialDaysOverride?: number;
 }
 
 interface RequestOneTimePaymentInternalParams extends RequestInternalParams {
@@ -37,6 +38,7 @@ interface RequestOneTimePaymentInternalParams extends RequestInternalParams {
 
 interface RequestUsageSubscriptionInternalParams extends RequestInternalParams {
   billingConfig: BillingConfigUsagePlan;
+  trialDaysOverride?: number;
 }
 
 export function request(config: ConfigInterface) {
@@ -46,6 +48,7 @@ export function request(config: ConfigInterface) {
     isTest = true,
     returnUrl: returnUrlParam,
     returnObject = false,
+    trialDaysOverride = undefined,
   }: Params): Promise<BillingRequestResponse<Params>> {
     if (!config.billing || !config.billing[plan]) {
       throw new BillingError({
@@ -90,6 +93,7 @@ export function request(config: ConfigInterface) {
           client,
           returnUrl,
           isTest,
+          trialDaysOverride,
         });
         data = mutationUsageResponse.data.appSubscriptionCreate;
         break;
@@ -101,6 +105,7 @@ export function request(config: ConfigInterface) {
           client,
           returnUrl,
           isTest,
+          trialDaysOverride,
         });
         data = mutationRecurringResponse.data.appSubscriptionCreate;
       }
@@ -129,13 +134,18 @@ async function requestRecurringPayment({
   client,
   returnUrl,
   isTest,
+  trialDaysOverride,
 }: RequestSubscriptionInternalParams): Promise<RecurringPaymentResponse> {
+  const trialDays =
+    trialDaysOverride === undefined
+      ? billingConfig.trialDays
+      : trialDaysOverride;
   const mutationResponse = await client.query<RecurringPaymentResponse>({
     data: {
       query: RECURRING_PURCHASE_MUTATION,
       variables: {
         name: plan,
-        trialDays: billingConfig.trialDays,
+        trialDays,
         replacementBehavior: billingConfig.replacementBehavior,
         returnUrl,
         test: isTest,
@@ -180,7 +190,12 @@ async function requestUsagePayment({
   client,
   returnUrl,
   isTest,
+  trialDaysOverride,
 }: RequestUsageSubscriptionInternalParams): Promise<RecurringPaymentResponse> {
+  const trialDays =
+    trialDaysOverride === undefined
+      ? billingConfig.trialDays
+      : trialDaysOverride;
   const mutationResponse = await client.query<RecurringPaymentResponse>({
     data: {
       query: RECURRING_PURCHASE_MUTATION,
@@ -188,7 +203,7 @@ async function requestUsagePayment({
         name: plan,
         returnUrl,
         test: isTest,
-        trialDays: billingConfig.trialDays,
+        trialDays,
         replacementBehavior: billingConfig.replacementBehavior,
         lineItems: [
           {
diff --git a/lib/billing/types.ts b/lib/billing/types.ts
index 345bae574..f51ac974e 100644
--- a/lib/billing/types.ts
+++ b/lib/billing/types.ts
@@ -74,6 +74,7 @@ export interface BillingRequestParams {
   isTest?: boolean;
   returnUrl?: string;
   returnObject?: boolean;
+  trialDaysOverride?: number;
 }
 
 export interface BillingRequestResponseObject {