diff --git a/app/controllers/additional_expenses_controller.rb b/app/controllers/additional_expenses_controller.rb
new file mode 100644
index 0000000000..f62068d21f
--- /dev/null
+++ b/app/controllers/additional_expenses_controller.rb
@@ -0,0 +1,32 @@
+class AdditionalExpensesController < ApplicationController
+  def create
+    @additional_expense = AdditionalExpense.new(additional_expense_params)
+    authorize @additional_expense
+
+    respond_to do |format|
+      if @additional_expense.save
+        format.json { render json: @additional_expense, status: :created }
+      else
+        format.json { render json: @additional_expense.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  def destroy
+    @additional_expense = AdditionalExpense.find(params[:id])
+    authorize @additional_expense
+
+    @additional_expense.destroy!
+
+    respond_to do |format|
+      format.json { head :no_content }
+    end
+  end
+
+  private
+
+  def additional_expense_params
+    params.require(:additional_expense)
+      .permit(:case_contact_id, :other_expense_amount, :other_expenses_describe)
+  end
+end
diff --git a/app/controllers/contact_topic_answers_controller.rb b/app/controllers/contact_topic_answers_controller.rb
new file mode 100644
index 0000000000..9b8adacb10
--- /dev/null
+++ b/app/controllers/contact_topic_answers_controller.rb
@@ -0,0 +1,32 @@
+class ContactTopicAnswersController < ApplicationController
+  def create
+    @contact_topic_answer = ContactTopicAnswer.new(contact_topic_answer_params)
+    authorize @contact_topic_answer
+
+    respond_to do |format|
+      if @contact_topic_answer.save
+        format.json { render json: @contact_topic_answer, status: :created }
+      else
+        format.json { render json: @contact_topic_answer.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  def destroy
+    @contact_topic_answer = ContactTopicAnswer.find(params[:id])
+    authorize @contact_topic_answer
+
+    @contact_topic_answer.destroy!
+
+    respond_to do |format|
+      format.json { head :no_content }
+    end
+  end
+
+  private
+
+  def contact_topic_answer_params
+    params.require(:contact_topic_answer)
+      .permit(:id, :contact_topic_id, :case_contact_id, :value, :_destroy)
+  end
+end
diff --git a/app/models/additional_expense.rb b/app/models/additional_expense.rb
index 12856b8ce2..6ed7f2567e 100644
--- a/app/models/additional_expense.rb
+++ b/app/models/additional_expense.rb
@@ -1,8 +1,16 @@
 class AdditionalExpense < ApplicationRecord
   belongs_to :case_contact
+  has_one :casa_case, through: :case_contact
+  has_one :casa_org, through: :casa_case
 
-  # validates :other_expense_amount, presence: true
-  validates :other_expenses_describe, presence: {message: "Expense description cannot be blank."}
+  validates :other_expenses_describe, presence: true, if: :describe_required?
+
+  alias_attribute :amount, :other_expense_amount
+  alias_attribute :describe, :other_expenses_describe
+
+  def describe_required?
+    other_expense_amount&.positive?
+  end
 end
 
 # == Schema Information
diff --git a/app/models/contact_topic_answer.rb b/app/models/contact_topic_answer.rb
index 918d2f1bab..2a1928040e 100644
--- a/app/models/contact_topic_answer.rb
+++ b/app/models/contact_topic_answer.rb
@@ -2,6 +2,9 @@ class ContactTopicAnswer < ApplicationRecord
   belongs_to :case_contact
   belongs_to :contact_topic
 
+  has_one :casa_case, through: :case_contact
+  has_one :casa_org, through: :casa_case
+
   validates :selected, inclusion: [true, false]
 
   default_scope { joins(:contact_topic).order("contact_topics.id") }
diff --git a/app/policies/additional_expense_policy.rb b/app/policies/additional_expense_policy.rb
new file mode 100644
index 0000000000..921fa088c9
--- /dev/null
+++ b/app/policies/additional_expense_policy.rb
@@ -0,0 +1,27 @@
+class AdditionalExpensePolicy < ApplicationPolicy
+  class Scope < ApplicationPolicy::Scope
+    def resolve
+      case user
+      when CasaAdmin, Supervisor
+        scope.joins([:case_contact, :casa_case]).where(casa_case: {casa_org_id: user.casa_org.id})
+      when Volunteer
+        scope.where(case_contact: user.case_contacts)
+      else
+        scope.none
+      end
+    end
+  end
+
+  def create?
+    case user
+    when Volunteer
+      user.case_contacts.include?(record.case_contact)
+    when CasaAdmin, Supervisor
+      same_org?
+    else
+      false
+    end
+  end
+
+  alias_method :destroy?, :create?
+end
diff --git a/app/policies/contact_topic_answer_policy.rb b/app/policies/contact_topic_answer_policy.rb
new file mode 100644
index 0000000000..1c0ae4f444
--- /dev/null
+++ b/app/policies/contact_topic_answer_policy.rb
@@ -0,0 +1,27 @@
+class ContactTopicAnswerPolicy < ApplicationPolicy
+  class Scope < ApplicationPolicy::Scope
+    def resolve
+      case user
+      when CasaAdmin, Supervisor
+        scope.joins([:case_contact, :casa_case]).where(casa_case: {casa_org_id: user.casa_org&.id})
+      when Volunteer
+        scope.where(case_contact: user.case_contacts)
+      else
+        scope.none
+      end
+    end
+  end
+
+  def create?
+    case user
+    when Volunteer
+      user.case_contacts.include?(record.case_contact)
+    when CasaAdmin, Supervisor
+      same_org?
+    else
+      false
+    end
+  end
+
+  alias_method :destroy?, :create?
+end
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 97346e5d9e..d71e8dd738 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -32,6 +32,9 @@
 en:
   activerecord:
     attributes:
+      additional_expense:
+        other_expenses_amount: Amount
+        other_expenses_describe: Description
       case_contact:
         occurred_at: Date
     errors:
diff --git a/config/routes.rb b/config/routes.rb
index ac967a6435..8264d94c8f 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -96,6 +96,9 @@
     end
   end
 
+  resources :contact_topic_answers, only: %i[create destroy],
+    constraints: lambda { |req| req.format == :json }
+
   resources :reports, only: %i[index]
   get :export_emails, to: "reports#export_emails"
 
@@ -191,6 +194,9 @@
   end
   resources :case_court_orders, only: %i[destroy]
 
+  resources :additional_expenses, only: %i[create destroy],
+    constraints: lambda { |req| req.format == :json }
+
   namespace :all_casa_admins do
     resources :casa_orgs, only: [:new, :create, :show] do
       resources :casa_admins, only: [:new, :create, :edit, :update] do
diff --git a/spec/models/additional_expense_spec.rb b/spec/models/additional_expense_spec.rb
index 83155512c1..a3e45a48e2 100644
--- a/spec/models/additional_expense_spec.rb
+++ b/spec/models/additional_expense_spec.rb
@@ -2,4 +2,17 @@
 
 RSpec.describe AdditionalExpense, type: :model do
   it { is_expected.to belong_to(:case_contact) }
+  it { is_expected.to have_one(:casa_case).through(:case_contact) }
+  it { is_expected.to have_one(:casa_org).through(:casa_case) }
+
+  describe "validations" do
+    let(:case_contact) { build_stubbed :case_contact }
+
+    it "requires describe only if amount is positive" do
+      expense = build(:additional_expense, amount: 0, describe: nil, case_contact:)
+      expect(expense).to be_valid
+      expense.update(amount: 1)
+      expect(expense).to be_invalid
+    end
+  end
 end
diff --git a/spec/policies/additional_expense_policy_spec.rb b/spec/policies/additional_expense_policy_spec.rb
new file mode 100644
index 0000000000..d6f1d817ca
--- /dev/null
+++ b/spec/policies/additional_expense_policy_spec.rb
@@ -0,0 +1,109 @@
+require "rails_helper"
+
+RSpec.describe AdditionalExpensePolicy, type: :policy do
+  let(:casa_org) { create :casa_org }
+  let(:volunteer) { create :volunteer, :with_single_case, casa_org: }
+  let(:supervisor) { create :supervisor, casa_org: }
+  let(:casa_admin) { create :casa_admin, casa_org: }
+  let(:all_casa_admin) { create :all_casa_admin }
+
+  let(:casa_case) { volunteer.casa_cases.first }
+  let(:case_contact) { create :case_contact, casa_case:, creator: volunteer }
+  let!(:additional_expense) { create :additional_expense, case_contact: }
+
+  let(:same_org_volunteer) { create :volunteer, casa_org: }
+  let!(:same_org_volunteer_case_assignment) { create :case_assignment, volunteer: same_org_volunteer, casa_case: }
+
+  subject { described_class }
+
+  permissions :create?, :destroy? do
+    it "does not permit a nil user" do
+      expect(described_class).not_to permit(nil, additional_expense)
+    end
+
+    it "permits a volunteer assigned to the expense's case contact" do
+      expect(described_class).to permit(volunteer, additional_expense)
+    end
+
+    it "does not permit a volunteer who did not create the case contact" do
+      expect(same_org_volunteer.casa_cases).to include(casa_case)
+      expect(described_class).not_to permit(same_org_volunteer, additional_expense)
+    end
+
+    it "permits a supervisor" do
+      expect(described_class).to permit(supervisor, additional_expense)
+    end
+
+    it "does not permit a supervisor for a different casa org" do
+      other_org_supervisor = create :supervisor, casa_org: create(:casa_org)
+      expect(described_class).not_to permit(other_org_supervisor, additional_expense)
+    end
+
+    it "permits a casa admin" do
+      expect(described_class).to permit(casa_admin, additional_expense)
+    end
+
+    it "does not permit a casa admin for a different casa org" do
+      other_org_casa_admin = create :casa_admin, casa_org: create(:casa_org)
+      expect(described_class).not_to permit(other_org_casa_admin, additional_expense)
+    end
+
+    it "does not permit an all casa admin" do
+      expect(described_class).not_to permit(all_casa_admin, additional_expense)
+    end
+  end
+
+  describe "Scope#resolve" do
+    let(:same_org_volunteer_case_contact) { create :case_contact, casa_case:, creator: same_org_volunteer }
+    let!(:same_org_other_volunteer_additional_expense) do
+      create :additional_expense, case_contact: same_org_volunteer_case_contact
+    end
+
+    let(:other_volunteer_case_contact) { create :case_contact, casa_case:, creator: other_volunteer }
+    let!(:other_volunteer_additional_expense) { create :additional_expense, case_contact: other_org_case_contact }
+
+    let(:other_org) { create :casa_org }
+    let(:other_org_volunteer) { create :volunteer, casa_org: other_org }
+    let(:other_org_casa_case) { create :casa_case, casa_org: other_org }
+    let(:other_org_case_contact) { create :case_contact, casa_case: other_org_casa_case, creator: other_org_volunteer }
+    let!(:other_org_additional_expense) { create :additional_expense, case_contact: other_org_case_contact }
+
+    subject { described_class::Scope.new(user, AdditionalExpense.all).resolve }
+
+    context "when user is a visitor" do
+      let(:user) { nil }
+
+      it { is_expected.not_to include(additional_expense) }
+      it { is_expected.not_to include(other_org_additional_expense) }
+    end
+
+    context "when user is a volunteer" do
+      let(:user) { volunteer }
+
+      it { is_expected.to include(additional_expense) }
+      it { is_expected.not_to include(other_volunteer_additional_expense) }
+      it { is_expected.not_to include(other_org_additional_expense) }
+    end
+
+    context "when user is a supervisor" do
+      let(:user) { supervisor }
+
+      it { is_expected.to include(additional_expense) }
+      it { is_expected.not_to include(other_org_additional_expense) }
+    end
+
+    context "when user is a casa_admin" do
+      let(:user) { casa_admin }
+
+      it { is_expected.to include(additional_expense) }
+      it { is_expected.not_to include(other_org_additional_expense) }
+    end
+
+    context "when user is an all_casa_admin" do
+      let(:user) { all_casa_admin }
+
+      it { is_expected.not_to include(additional_expense) }
+      it { is_expected.not_to include(other_org_additional_expense) }
+    end
+  end
+end
diff --git a/spec/policies/contact_topic_answer_policy_spec.rb b/spec/policies/contact_topic_answer_policy_spec.rb
new file mode 100644
index 0000000000..7cd35d08ed
--- /dev/null
+++ b/spec/policies/contact_topic_answer_policy_spec.rb
@@ -0,0 +1,111 @@
+require "rails_helper"
+
+RSpec.describe ContactTopicAnswerPolicy, type: :policy do
+  let(:casa_org) { create :casa_org }
+  let(:volunteer) { create :volunteer, :with_single_case, casa_org: }
+  let(:supervisor) { create :supervisor, casa_org: }
+  let(:casa_admin) { create :casa_admin, casa_org: }
+  let(:all_casa_admin) { create :all_casa_admin }
+
+  let(:contact_topic) { create :contact_topic, casa_org: }
+  let(:casa_case) { volunteer.casa_cases.first }
+  let(:case_contact) { create :case_contact, casa_case:, creator: volunteer }
+  let!(:contact_topic_answer) { create :contact_topic_answer, contact_topic:, case_contact: }
+
+  let(:same_org_volunteer) { create :volunteer, casa_org: }
+  let!(:same_org_volunteer_case_assignment) { create :case_assignment, volunteer: same_org_volunteer, casa_case: }
+
+  subject { described_class }
+
+  permissions :create?, :destroy? do
+    it "does not permit a nil user" do
+      expect(described_class).not_to permit(nil, contact_topic_answer)
+    end
+
+    it "permits a volunteer assigned to the contact topic answer case" do
+      expect(described_class).to permit(volunteer, contact_topic_answer)
+    end
+
+    it "does not permit a volunteer who did not create the case contact" do
+      expect(same_org_volunteer.casa_cases).to include(casa_case)
+      expect(described_class).not_to permit(same_org_volunteer, contact_topic_answer)
+    end
+
+    it "permits a supervisor" do
+      expect(described_class).to permit(supervisor, contact_topic_answer)
+    end
+
+    it "does not permit a supervisor for a different casa org" do
+      other_org_supervisor = create :supervisor, casa_org: create(:casa_org)
+      expect(described_class).not_to permit(other_org_supervisor, contact_topic_answer)
+    end
+
+    it "permits a casa admin" do
+      expect(described_class).to permit(casa_admin, contact_topic_answer)
+    end
+
+    it "does not permit a casa admin for a different casa org" do
+      other_org_casa_admin = create :casa_admin, casa_org: create(:casa_org)
+      expect(described_class).not_to permit(other_org_casa_admin, contact_topic_answer)
+    end
+
+    it "does not permit an all casa admin" do
+      expect(described_class).not_to permit(all_casa_admin, contact_topic_answer)
+    end
+  end
+
+  describe "Scope#resolve" do
+    let(:same_org_volunteer_case_contact) { create :case_contact, casa_case:, creator: same_org_volunteer }
+    let!(:same_org_other_volunteer_contact_topic_answer) do
+      create :contact_topic_answer, contact_topic:, case_contact: same_org_volunteer_case_contact
+    end
+
+    let(:other_volunteer_case_contact) { create :case_contact, casa_case:, creator: other_volunteer }
+    let!(:other_volunteer_contact_topic_answer) { create :contact_topic_answer, contact_topic:, case_contact: other_org_case_contact }
+
+    let(:other_org) { create :casa_org }
+    let(:other_org_volunteer) { create :volunteer, casa_org: other_org }
+    let(:other_org_contact_topic) { create :contact_topic, casa_org: other_org }
+    let(:other_org_casa_case) { create :casa_case, casa_org: other_org }
+    let(:other_org_case_contact) { create :case_contact, casa_case: other_org_casa_case, creator: other_org_volunteer }
+    let!(:other_org_contact_topic_answer) { create :contact_topic_answer, case_contact: other_org_case_contact, contact_topic: other_org_contact_topic }
+
+    subject { described_class::Scope.new(user, ContactTopicAnswer.all).resolve }
+
+    context "when user is a visitor" do
+      let(:user) { nil }
+
+      it { is_expected.not_to include(contact_topic_answer) }
+      it { is_expected.not_to include(other_org_contact_topic_answer) }
+    end
+
+    context "when user is a volunteer" do
+      let(:user) { volunteer }
+
+      it { is_expected.to include(contact_topic_answer) }
+      it { is_expected.not_to include(other_volunteer_contact_topic_answer) }
+      it { is_expected.not_to include(other_org_contact_topic_answer) }
+    end
+
+    context "when user is a supervisor" do
+      let(:user) { supervisor }
+
+      it { is_expected.to include(contact_topic_answer) }
+      it { is_expected.not_to include(other_org_contact_topic_answer) }
+    end
+
+    context "when user is a casa_admin" do
+      let(:user) { casa_admin }
+
+      it { is_expected.to include(contact_topic_answer) }
+      it { is_expected.not_to include(other_org_contact_topic_answer) }
+    end
+
+    context "when user is an all_casa_admin" do
+      let(:user) { all_casa_admin }
+
+      it { is_expected.not_to include(contact_topic_answer) }
+      it { is_expected.not_to include(other_org_contact_topic_answer) }
+    end
+  end
+end
diff --git a/spec/requests/additional_expenses_spec.rb b/spec/requests/additional_expenses_spec.rb
new file mode 100644
index 0000000000..955febb066
--- /dev/null
+++ b/spec/requests/additional_expenses_spec.rb
@@ -0,0 +1,66 @@
+require "rails_helper"
+
+RSpec.describe "/additional_expenses", type: :request do
+  let(:casa_org) { create :casa_org }
+  let(:volunteer) { create :volunteer, :with_single_case, casa_org: }
+  let(:casa_case) { volunteer.casa_cases.first }
+  let(:case_contact) { create :case_contact, casa_case:, creator: volunteer }
+
+  let(:attributes) do
+    attributes_for(:additional_expense)
+      .merge({case_contact_id: case_contact.id})
+  end
+
+  let(:invalid_attributes) { attributes.except(:case_contact_id) }
+
+  let(:user) { volunteer }
+
+  before { sign_in user }
+
+  describe "POST /create" do
+    let(:params) { {additional_expense: attributes} }
+
+    subject { post additional_expenses_path, params:, as: :json }
+
+    it "creates a new AdditionalExpense and responds created" do
+      expect { subject }.to change(AdditionalExpense, :count).by(1)
+      expect(response).to have_http_status(:created)
+    end
+
+    it "responds success with the new contact topic answer" do
+      subject
+      expect(response).to have_http_status(:created)
+      response_json = JSON.parse(response.body)
+      expect(response_json.keys).to include("id", "case_contact_id", "other_expense_amount", "other_expenses_describe")
+    end
+
+    context "with invalid parameters" do
+      let(:params) { {additional_expense: invalid_attributes} }
+
+      it "does not create a new AdditionalExpense" do
+        expect { subject }.not_to change(AdditionalExpense, :count)
+      end
+
+      it "fails authorization and renders a response with 302 found redirect" do
+        subject
+        expect(response).to have_http_status(:found)
+        expect(response).to redirect_to(root_path)
+      end
+    end
+  end
+
+  describe "DELETE /destroy" do
+    let!(:additional_expense) { create :additional_expense, case_contact: }
+
+    subject { delete additional_expense_url(additional_expense), as: :json }
+
+    it "destroys the requested additional_expense" do
+      expect { subject }.to change(AdditionalExpense, :count).by(-1)
+    end
+
+    it "responds no content" do
+      subject
+      expect(response).to have_http_status(:no_content)
+    end
+  end
+end
diff --git a/spec/requests/contact_topic_answers_spec.rb b/spec/requests/contact_topic_answers_spec.rb
new file mode 100644
index 0000000000..4715e05eeb
--- /dev/null
+++ b/spec/requests/contact_topic_answers_spec.rb
@@ -0,0 +1,67 @@
+require "rails_helper"
+
+RSpec.describe "/contact_topic_answers", type: :request do
+  let(:casa_org) { create :casa_org }
+  let(:contact_topic) { create :contact_topic, casa_org: }
+  let(:volunteer) { create :volunteer, :with_single_case, casa_org: }
+  let(:casa_case) { volunteer.casa_cases.first }
+  let(:case_contact) { create :case_contact, casa_case:, creator: volunteer }
+
+  let(:attributes) do
+    attributes_for(:contact_topic_answer)
+      .merge({contact_topic_id: contact_topic.id, case_contact_id: case_contact.id})
+  end
+
+  let(:invalid_attributes) { attributes.except(:case_contact_id) }
+
+  let(:user) { volunteer }
+
+  before { sign_in user }
+
+  describe "POST /create" do
+    let(:params) { {contact_topic_answer: attributes} }
+
+    subject { post contact_topic_answers_path, params:, as: :json }
+
+    it "creates a new ContactTopicAnswer and responds created" do
+      expect { subject }.to change(ContactTopicAnswer, :count).by(1)
+      expect(response).to have_http_status(:created)
+    end
+
+    it "responds success with the new contact topic answer" do
+      subject
+      expect(response).to have_http_status(:created)
+      response_json = JSON.parse(response.body)
+      expect(response_json.keys).to include("id", "contact_topic_id", "value", "case_contact_id", "selected")
+    end
+
+    context "with invalid parameters" do
+      let(:params) { {contact_topic_answer: invalid_attributes} }
+
+      it "does not create a new ContactTopicAnswer" do
+        expect { subject }.not_to change(ContactTopicAnswer, :count)
+      end
+
+      it "fails authorization and renders a response with 302 found redirect" do
+        subject
+        expect(response).to have_http_status(:found)
+        expect(response).to redirect_to(root_path)
+      end
+    end
+  end
+
+  describe "DELETE /destroy" do
+    let!(:contact_topic_answer) { create :contact_topic_answer, contact_topic:, case_contact: }
+
+    subject { delete contact_topic_answer_url(contact_topic_answer), as: :json }
+
+    it "destroys the requested contact_topic_answer" do
+      expect { subject }.to change(ContactTopicAnswer, :count).by(-1)
+    end
+
+    it "responds no content" do
+      subject
+      expect(response).to have_http_status(:no_content)
+    end
+  end
+end