diff --git a/db/dump/fixtures.sql b/db/dump/fixtures.sql
index a3791f9f5..fa204ddd5 100644
--- a/db/dump/fixtures.sql
+++ b/db/dump/fixtures.sql
@@ -2887,7 +2887,9 @@ INSERT INTO `vn`.`report` (`id`, `name`, `paperSizeFk`, `method`)
 
 INSERT INTO `vn`.`payDemDetail` (`id`, `detail`)
     VALUES
-        (1, 1);
+        (1, 1),
+        (2, 20),
+        (7, 1);
 
 INSERT INTO `vn`.`workerConfig` (`id`, `businessUpdated`, `roleFk`, `payMethodFk`, `businessTypeFk`)
     VALUES
diff --git a/modules/invoiceIn/back/methods/invoice-in-due-day/new.js b/modules/invoiceIn/back/methods/invoice-in-due-day/new.js
new file mode 100644
index 000000000..37d2f6d05
--- /dev/null
+++ b/modules/invoiceIn/back/methods/invoice-in-due-day/new.js
@@ -0,0 +1,37 @@
+module.exports = Self => {
+    Self.remoteMethodCtx('new', {
+        description: 'Creates a new invoiceIn due day',
+        accessType: 'WRITE',
+        accepts: {
+            arg: 'id',
+            type: 'number',
+            required: true,
+            description: 'The invoiceIn id',
+        },
+        http: {
+            path: '/new',
+            verb: 'POST'
+        }
+    });
+
+    Self.new = async(ctx, id, options) => {
+        let tx;
+        const myOptions = {userId: ctx.req.accessToken.userId};
+
+        if (typeof options == 'object')
+            Object.assign(myOptions, options);
+
+        if (!myOptions.transaction) {
+            tx = await Self.beginTransaction({});
+            myOptions.transaction = tx;
+        }
+
+        try {
+            await Self.rawSql(`CALL vn.invoiceInDueDay_calculate(?)`, [id], myOptions);
+            if (tx) await tx.commit();
+        } catch (e) {
+            if (tx) await tx.rollback();
+            throw e;
+        }
+    };
+};
diff --git a/modules/invoiceIn/back/methods/invoice-in-due-day/specs/new.spec.js b/modules/invoiceIn/back/methods/invoice-in-due-day/specs/new.spec.js
new file mode 100644
index 000000000..c188a511d
--- /dev/null
+++ b/modules/invoiceIn/back/methods/invoice-in-due-day/specs/new.spec.js
@@ -0,0 +1,45 @@
+const LoopBackContext = require('loopback-context');
+const models = require('vn-loopback/server/server').models;
+
+describe('invoiceInDueDay new()', () => {
+    beforeAll(async() => {
+        const activeCtx = {
+            accessToken: {userId: 9},
+        };
+        spyOn(LoopBackContext, 'getCurrentContext').and.returnValue({
+            active: activeCtx
+        });
+    });
+
+    it('should correctly create a new due day', async() => {
+        const userId = 9;
+        const invoiceInFk = 6;
+
+        const ctx = {
+            req: {
+
+                accessToken: {userId: userId},
+            }
+        };
+
+        const tx = await models.InvoiceIn.beginTransaction({});
+        const options = {transaction: tx};
+
+        try {
+            await models.InvoiceInDueDay.destroyAll({
+                invoiceInFk
+            }, options);
+
+            await models.InvoiceInDueDay.new(ctx, invoiceInFk, options);
+
+            const result = await models.InvoiceInDueDay.find({where: {invoiceInFk}}, options);
+
+            expect(result).toBeDefined();
+
+            await tx.rollback();
+        } catch (e) {
+            await tx.rollback();
+            throw e;
+        }
+    });
+});
diff --git a/modules/invoiceIn/back/models/invoice-in-due-day.js b/modules/invoiceIn/back/models/invoice-in-due-day.js
new file mode 100644
index 000000000..2375c6566
--- /dev/null
+++ b/modules/invoiceIn/back/models/invoice-in-due-day.js
@@ -0,0 +1,3 @@
+module.exports = Self => {
+    require('../methods/invoice-in-due-day/new')(Self);
+};