diff --git a/app/models/payment.rb b/app/models/payment.rb
index b926190a852..de9e40e5dfb 100644
--- a/app/models/payment.rb
+++ b/app/models/payment.rb
@@ -23,11 +23,31 @@ class Payment < ApplicationRecord
 
   enum payable_payment_status: PAYABLE_PAYMENT_STATUS.map { |s| [s, s] }.to_h
 
+  validate :max_invoice_paid_amount_cents, on: :create
+  validate :payment_request_succeeded, on: :create
+
   def should_sync_payment?
     return false unless payable.is_a?(Invoice)
 
     payable.finalized? && customer.integration_customers.accounting_kind.any? { |c| c.integration.sync_payments }
   end
+
+  private
+
+  def max_invoice_paid_amount_cents
+    return if !payable.is_a?(Invoice) || payment_type_provider?
+    return if amount_cents + payable.total_paid_amount_cents <= payable.total_amount_cents
+
+    errors.add(:amount_cents, :greater_than)
+  end
+
+  def payment_request_succeeded
+    return if !payable.is_a?(Invoice) || payment_type_provider?
+
+    if payable.payment_requests.where(payment_status: 'succeeded').exists?
+      errors.add(:base, :payment_request_is_already_succeeded)
+    end
+  end
 end
 
 # == Schema Information
diff --git a/app/services/manual_payments/create_service.rb b/app/services/manual_payments/create_service.rb
new file mode 100644
index 00000000000..c41a1990d1b
--- /dev/null
+++ b/app/services/manual_payments/create_service.rb
@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+module ManualPayments
+  class CreateService < BaseService
+    def initialize(invoice:, params:)
+      @invoice = invoice
+      @params = params
+
+      super
+    end
+
+    def call
+      check_preconditions
+      return result if result.error
+
+      amount_cents = params[:amount_cents]
+
+      ActiveRecord::Base.transaction do
+        payment = invoice.payments.create!(
+          amount_cents:,
+          reference: params[:reference],
+          amount_currency: invoice.currency,
+          status: 'succeeded',
+          payable_payment_status: 'succeeded',
+          payment_type: :manual
+        )
+
+        invoice.update!(total_paid_amount_cents: invoice.total_paid_amount_cents + amount_cents)
+
+        result.payment = payment
+
+        if invoice.payments.where(payable_payment_status: 'succeeded').sum(:amount_cents) == invoice.total_amount_cents
+          payment.payable.update!(payment_status: 'succeeded')
+        end
+
+        Integrations::Aggregator::Payments::CreateJob.perform_later(payment:) if result.payment&.should_sync_payment?
+      end
+
+      result
+    rescue ActiveRecord::RecordInvalid => e
+      result.record_validation_failure!(record: e.record)
+    end
+
+    private
+
+    attr_reader :invoice, :params
+
+    def check_preconditions
+      return result.forbidden_failure! unless License.premium?
+      return result.not_found_failure!(resource: "invoice") unless invoice
+      result.forbidden_failure! unless invoice.organization.premium_integrations.include?('manual_payments')
+    end
+  end
+end
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 2a49ff3a45c..20654816e64 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -40,6 +40,7 @@ en:
         not_compatible_with_aggregation_type: not_compatible_with_aggregation_type
         not_compatible_with_pay_in_advance: not_compatible_with_pay_in_advance
         only_compatible_with_pay_in_advance_and_non_invoiceable: only_compatible_with_pay_in_advance_and_non_invoiceable
+        payment_request_is_already_succeeded: payment_request_is_already_succeeded
         required: relation_must_exist
         taken: value_already_exist
         too_long: value_is_too_long
diff --git a/spec/models/payment_spec.rb b/spec/models/payment_spec.rb
index bfb31a3a020..b05b010c3d9 100644
--- a/spec/models/payment_spec.rb
+++ b/spec/models/payment_spec.rb
@@ -3,11 +3,13 @@
 require 'rails_helper'
 
 RSpec.describe Payment, type: :model do
-  subject(:payment) { build(:payment, payment_type:, provider_payment_id:, reference:) }
+  subject(:payment) { build(:payment, payable:, payment_type:, provider_payment_id:, reference:, amount_cents:) }
 
+  let(:payable) { create(:invoice, total_amount_cents: 10000) }
   let(:payment_type) { 'provider' }
   let(:provider_payment_id) { SecureRandom.uuid }
   let(:reference) { nil }
+  let(:amount_cents) { 200 }
 
   it_behaves_like 'paper_trail traceable'
 
@@ -29,6 +31,130 @@
 
     before { payment.valid? }
 
+    describe 'of max invoice paid amount cents' do
+      before { payment.save }
+
+      context 'when payable is an invoice' do
+        context 'when payment type is provider' do
+          let(:payment_type) { 'provider' }
+
+          context 'when amount cents + total paid amount cents is smaller or equal than invoice total amount cents' do
+            let(:payment_request) { create(:payment_request, payment_status: :succeeded) }
+
+            it 'does not add an error' do
+              expect(errors.where(:amount_cents, :greater_than)).not_to be_present
+            end
+          end
+
+          context 'when amount cents + total paid amount cents is greater than invoice total amount cents' do
+            let(:amount_cents) { 10001 }
+
+            it 'does not add an error' do
+              expect(errors.where(:amount_cents, :greater_than)).not_to be_present
+            end
+          end
+        end
+
+        context 'when payment type is manual' do
+          let(:payment_type) { 'manual' }
+
+          context 'when amount cents + total paid amount cents is smaller or equal than invoice total amount cents' do
+            let(:payment_request) { create(:payment_request, payment_status: :succeeded) }
+
+            it 'does not add an error' do
+              expect(errors.where(:amount_cents, :greater_than)).not_to be_present
+            end
+          end
+
+          context 'when amount cents + total paid amount cents is greater than invoice total amount cents' do
+            let(:amount_cents) { 10001 }
+
+            it 'adds an error' do
+              expect(errors.where(:amount_cents, :greater_than)).to be_present
+            end
+          end
+        end
+      end
+    end
+
+    describe 'of payment request succeeded' do
+      context 'when payable is an invoice' do
+        context 'when payment type is provider' do
+          let(:payment_type) { 'provider' }
+
+          context 'when succeeded payment requests exist' do
+            let(:payment_request) { create(:payment_request, payment_status: :succeeded) }
+
+            before do
+              create(:payment_request_applied_invoice, payment_request:, invoice: payable)
+              payment.save
+            end
+
+            it 'does not add an error' do
+              expect(errors.where(:base, :payment_request_is_already_succeeded)).not_to be_present
+            end
+          end
+
+          context 'when no succeeded payment requests exist' do
+            before { payment.save }
+
+            it 'does not add an error' do
+              expect(errors.where(:base, :payment_request_is_already_succeeded)).not_to be_present
+            end
+          end
+        end
+
+        context 'when payment type is manual' do
+          let(:payment_type) { 'manual' }
+
+          context 'when succeeded payment request exist' do
+            let(:payment_request) { create(:payment_request, payment_status: 'succeeded') }
+
+            before do
+              create(:payment_request_applied_invoice, payment_request:, invoice: payable)
+              payment.save
+            end
+
+            it 'adds an error' do
+              expect(payment.errors.where(:base, :payment_request_is_already_succeeded)).to be_present
+            end
+          end
+
+          context 'when no succeeded payment requests exist' do
+            before { payment.save }
+
+            it 'does not add an error' do
+              expect(errors.where(:base, :payment_request_is_already_succeeded)).not_to be_present
+            end
+          end
+        end
+      end
+
+      context 'when payable is not an invoice' do
+        let(:payable) { create(:payment_request) }
+
+        context 'when payment type is provider' do
+          let(:payment_type) { 'provider' }
+
+          before { payment.save }
+
+          it 'does not add an error' do
+            expect(errors.where(:base, :payment_request_is_already_succeeded)).not_to be_present
+          end
+        end
+
+        context 'when payment type is manual' do
+          let(:payment_type) { 'manual' }
+
+          before { payment.save }
+
+          it 'does not add an error' do
+            expect(errors.where(:base, :payment_request_is_already_succeeded)).not_to be_present
+          end
+        end
+      end
+    end
+
     describe 'of reference' do
       context 'when payment type is provider' do
         context 'when reference is present' do
diff --git a/spec/services/manual_payments/create_service_spec.rb b/spec/services/manual_payments/create_service_spec.rb
new file mode 100644
index 00000000000..f8a0116e806
--- /dev/null
+++ b/spec/services/manual_payments/create_service_spec.rb
@@ -0,0 +1,152 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+RSpec.describe ManualPayments::CreateService, type: :service do
+  subject(:service) { described_class.new(invoice:, params:) }
+
+  let(:invoice) { create(:invoice, customer:, organization:, total_amount_cents: 10000, status: :finalized) }
+  let(:organization) { create(:organization, premium_integrations:) }
+  let(:customer) { create(:customer, organization:) }
+  let(:params) { {amount_cents:, reference: "ref1"} }
+  let(:amount_cents) { 10000 }
+
+  describe "#call" do
+    context "when organization is not premium" do
+      let(:premium_integrations) { %w[] }
+
+      it "returns forbidden failure" do
+        result = service.call
+
+        aggregate_failures do
+          expect(result).not_to be_success
+          expect(result.error).to be_a(BaseService::ForbiddenFailure)
+        end
+      end
+    end
+
+    context "when organization is premium" do
+      around { |test| lago_premium!(&test) }
+
+      context "with the premium_integration disabled" do
+        let(:premium_integrations) { %w[] }
+
+        it "returns forbidden failure" do
+          result = service.call
+
+          aggregate_failures do
+            expect(result).not_to be_success
+            expect(result.error).to be_a(BaseService::ForbiddenFailure)
+          end
+        end
+      end
+
+      context "with the premium_integration enabled" do
+        let(:premium_integrations) { %w[manual_payments] }
+
+        context "when invoice does not exist" do
+          let(:invoice) { nil }
+
+          it "returns not found failure" do
+            result = service.call
+
+            aggregate_failures do
+              expect(result).not_to be_success
+              expect(result.error).to be_a(BaseService::NotFoundFailure)
+            end
+          end
+        end
+
+        context "when invoice's payment request is succeeded" do
+          let(:payment_request) { create(:payment_request, payment_status: "succeeded") }
+
+          before do
+            create(:payment_request_applied_invoice, invoice:, payment_request:)
+          end
+
+          it "returns validation failure" do
+            result = service.call
+
+            aggregate_failures do
+              expect(result).not_to be_success
+              expect(result.error).to be_a(BaseService::ValidationFailure)
+            end
+          end
+        end
+
+        context "when payment amount cents is greater than invoice's remaining amount cents" do
+          let(:amount_cents) { 10001 }
+
+          it "returns validation failure" do
+            result = service.call
+
+            aggregate_failures do
+              expect(result).not_to be_success
+              expect(result.error).to be_a(BaseService::ValidationFailure)
+            end
+          end
+        end
+
+        context "when payment amount cents is smaller than invoice remaining amount cents" do
+          let(:amount_cents) { 2000 }
+
+          it "creates a payment" do
+            result = service.call
+
+            expect(result).to be_success
+            expect(result.payment.payment_type).to eq("manual")
+          end
+
+          it "updates invoice's total paid amount cents" do
+            expect { service.call }.to change(invoice, :total_paid_amount_cents).from(0).to(amount_cents)
+          end
+
+          context "when there is an integration customer" do
+            let(:integration) do
+              create(
+                :netsuite_integration,
+                organization:,
+                settings: {
+                  account_id: "acc_12345",
+                  client_id: "cli_12345",
+                  script_endpoint_url: Faker::Internet.url,
+                  sync_payments: true
+                }
+              )
+            end
+
+            before { create(:netsuite_customer, integration:, customer:) }
+
+            it "enqueues an aggregator payment job" do
+              expect { service.call }.to have_enqueued_job(Integrations::Aggregator::Payments::CreateJob)
+            end
+          end
+        end
+
+        context "when payment amount cents is equal to invoice remaining amount cents" do
+          let(:amount_cents) { 10000 }
+
+          it "creates a payment" do
+            result = service.call
+
+            expect(result).to be_success
+            expect(result.payment.payment_type).to eq("manual")
+          end
+
+          it "updates invoice's total paid amount cents" do
+            expect { service.call }.to change(invoice, :total_paid_amount_cents).from(0).to(amount_cents)
+          end
+
+          it "updates invoice's payment status to suceeded" do
+            result = service.call
+
+            aggregate_failures do
+              expect(result.payment.payable.payment_status).to eq("succeeded")
+              expect(result.payment.payable_payment_status).to eq("succeeded")
+            end
+          end
+        end
+      end
+    end
+  end
+end