diff --git a/src/lib/actions/paymentCreateUpdate.ts b/src/lib/actions/paymentCreateUpdate.ts
new file mode 100644
index 0000000..d49646d
--- /dev/null
+++ b/src/lib/actions/paymentCreateUpdate.ts
@@ -0,0 +1,77 @@
+import { z } from 'zod';
+import { ActionResponse } from '@/lib/types/ActionResponse';
+import { prismaClient } from '@/prisma';
+import { getUser } from '@/auth';
+import { URL_SIGN_IN } from '@/lib/constants';
+import { paymentFormSchema } from '@/lib/form-schemas/paymentFormSchema';
+
+export default async function paymentCreateUpdate({
+    id,
+    amount,
+    date,
+    payorId,
+    payeeId,
+    categoryId,
+    note,
+}: z.infer<typeof paymentFormSchema>): Promise<ActionResponse> {
+    'use server';
+
+    // check that user is logged in
+    const user = await getUser();
+    if (!user) {
+        return {
+            type: 'error',
+            message: 'You must be logged in to create/update a payment.',
+            redirect: URL_SIGN_IN,
+        };
+    }
+
+    // create/update payment
+    try {
+        if (id) {
+            await prismaClient.payment.update({
+                    where: {
+                        id: id,
+                    },
+                    data: {
+                        amount: amount,
+                        date: date,
+                        payorId: payorId,
+                        payeeId: payeeId,
+                        categoryId: categoryId,
+                        note: note,
+                    },
+                },
+            );
+
+            // return success
+            return {
+                type: 'success',
+                message: `Payment updated`,
+            };
+        } else {
+            await prismaClient.payment.create({
+                data: {
+                    userId: user.id,
+                    amount: amount,
+                    date: date,
+                    payorId: payorId,
+                    payeeId: payeeId,
+                    categoryId: categoryId,
+                    note: note,
+                },
+            });
+
+            // return success
+            return {
+                type: 'success',
+                message: `Payment created`,
+            };
+        }
+    } catch (e) {
+        return {
+            type: 'error',
+            message: 'Failed creating/updating payment',
+        };
+    }
+}
diff --git a/src/lib/actions/paymentDelete.ts b/src/lib/actions/paymentDelete.ts
new file mode 100644
index 0000000..46ee086
--- /dev/null
+++ b/src/lib/actions/paymentDelete.ts
@@ -0,0 +1,62 @@
+import { ActionResponse } from '@/lib/types/ActionResponse';
+import { prismaClient } from '@/prisma';
+import { getUser } from '@/auth';
+import { URL_SIGN_IN } from '@/lib/constants';
+
+export default async function paymentDelete(id: number): Promise<ActionResponse> {
+    'use server';
+
+    // check that id is a number
+    if (!id || isNaN(id)) {
+        return {
+            type: 'error',
+            message: 'Invalid payment ID',
+        };
+    }
+
+    // check that user is logged in
+    const user = await getUser();
+    if (!user) {
+        return {
+            type: 'error',
+            message: 'You must be logged in to delete a payment.',
+            redirect: URL_SIGN_IN,
+        };
+    }
+
+    // check that payment is associated with user
+    const payment = await prismaClient.payment.findFirst({
+        where: {
+            id: id,
+            userId: user.id,
+        },
+    });
+    if (!payment) {
+        return {
+            type: 'error',
+            message: 'Payment not found',
+        };
+    }
+
+    // delete payment
+    try {
+        await prismaClient.payment.delete({
+                where: {
+                    id: payment.id,
+                    userId: user.id,
+                },
+            },
+        );
+    } catch (e) {
+        return {
+            type: 'error',
+            message: 'Failed deleting payment',
+        };
+    }
+
+    // return success
+    return {
+        type: 'success',
+        message: `Payment deleted`,
+    };
+}