diff --git a/frontend/src/components/OnboardingProgressTracker.test.tsx b/frontend/src/components/OnboardingProgressTracker.test.tsx
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+++ b/frontend/src/components/OnboardingProgressTracker.test.tsx
@@ -0,0 +1,191 @@
+/**
+ * @vitest-environment jsdom
+ */
+import { describe, it, expect, beforeEach, vi } from "vitest";
+import { render, screen, fireEvent, waitFor } from "@testing-library/react";
+import "@testing-library/jest-dom";
+import { OnboardingProgressTracker } from "./OnboardingProgressTracker";
+import React from "react";
+
+// Mock the dependencies
+vi.mock("next-intl", () => ({
+  useTranslations: () => (key: string) => key,
+}));
+
+// Mock framer-motion to avoid animation issues in tests
+vi.mock("framer-motion", () => ({
+  motion: {
+    div: React.forwardRef(({ children, ...props }: any, ref) => <div {...props} ref={ref}>{children}</div>),
+    button: React.forwardRef(({ children, ...props }: any, ref) => <button {...props} ref={ref}>{children}</button>),
+    span: React.forwardRef(({ children, ...props }: any, ref) => <span {...props} ref={ref}>{children}</span>),
+    svg: React.forwardRef(({ children, ...props }: any, ref) => <svg {...props} ref={ref}>{children}</svg>),
+  },
+  AnimatePresence: ({ children }: any) => <>{children}</>,
+}));
+
+/**
+ * Unit tests for OnboardingProgressTracker component
+ */
+describe("OnboardingProgressTracker", () => {
+  const mockSteps = [
+    {
+      id: "1",
+      title: "Step 1",
+      description: "Description 1",
+      completed: true,
+      required: true,
+      order: 1,
+    },
+    {
+      id: "2",
+      title: "Step 2",
+      description: "Description 2",
+      completed: false,
+      required: true,
+      order: 2,
+    },
+    {
+      id: "3",
+      title: "Step 3",
+      description: "Description 3",
+      completed: false,
+      required: false,
+      order: 3,
+    },
+  ];
+
+  const defaultProps = {
+    steps: mockSteps,
+    onStepChange: vi.fn(),
+    onComplete: vi.fn(),
+  };
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  describe("Rendering", () => {
+    it("should render the component with correct title", () => {
+      render(<OnboardingProgressTracker {...defaultProps} />);
+      expect(screen.getByText("onboarding.title")).toBeInTheDocument();
+    });
+
+    it("should render all steps with correct titles and descriptions", () => {
+      render(<OnboardingProgressTracker {...defaultProps} />);
+      
+      mockSteps.forEach(step => {
+        expect(screen.getByText(step.title)).toBeInTheDocument();
+        expect(screen.getByText(step.description)).toBeInTheDocument();
+      });
+    });
+
+    it("should show correct progress percentage", () => {
+      render(<OnboardingProgressTracker {...defaultProps} />);
+      // 1 out of 3 steps completed = 33%
+      expect(screen.getByText("33%")).toBeInTheDocument();
+    });
+
+    it("should show progress bar with correct width", () => {
+      render(<OnboardingProgressTracker {...defaultProps} />);
+      const progressBar = screen.getByLabelText("onboarding.progressBar");
+      expect(progressBar).toHaveStyle("width: 33%");
+    });
+  });
+
+  describe("Interactions", () => {
+    it("should call onStepChange when a step is clicked", () => {
+      render(<OnboardingProgressTracker {...defaultProps} />);
+      
+      // The aria-label is constructed as: `Step ${index + 1}: ${step.title}${step.completed ? ". Completed" : ""}${step.required ? ". Required" : ""}`
+      const secondStepButton = screen.getByLabelText(/Step 2: Step 2. Required/i);
+      fireEvent.click(secondStepButton);
+      
+      expect(defaultProps.onStepChange).toHaveBeenCalledWith("2");
+    });
+
+    it("should update announcement text when a step is clicked", async () => {
+      render(<OnboardingProgressTracker {...defaultProps} />);
+      
+      const secondStepButton = screen.getByLabelText(/Step 2: Step 2. Required/i);
+      fireEvent.click(secondStepButton);
+      
+      const announcementArea = screen.getByRole("status");
+      // The announcement text is: `${t("onboarding.stepProgress") || "Step"} ${step.order}: ${step.title}. ${step.description}`
+      expect(announcementArea.textContent).toContain("Step 2: Step 2. Description 2");
+    });
+  });
+
+  describe("Completion Logic", () => {
+    it("should call onComplete when all required steps are completed", async () => {
+      const completedRequiredSteps = [
+        { ...mockSteps[0], completed: true },
+        { ...mockSteps[1], completed: true },
+        { ...mockSteps[2], completed: false }, // Not required
+      ];
+
+      render(<OnboardingProgressTracker {...defaultProps} steps={completedRequiredSteps} />);
+      
+      await waitFor(() => {
+        expect(defaultProps.onComplete).toHaveBeenCalled();
+      });
+      expect(screen.getByText("onboarding.allCompleted")).toBeInTheDocument();
+      expect(screen.getByText("onboarding.successTitle")).toBeInTheDocument();
+    });
+
+    it("should not call onComplete if a required step is missing", () => {
+      const incompleteRequiredSteps = [
+        { ...mockSteps[0], completed: true },
+        { ...mockSteps[1], completed: false }, // Required
+        { ...mockSteps[2], completed: true }, // Not required
+      ];
+
+      render(<OnboardingProgressTracker {...defaultProps} steps={incompleteRequiredSteps} />);
+      
+      expect(defaultProps.onComplete).not.toHaveBeenCalled();
+      expect(screen.queryByText("onboarding.successTitle")).not.toBeInTheDocument();
+    });
+  });
+
+  describe("Accessibility", () => {
+    it("should have proper ARIA attributes for the container", () => {
+      render(<OnboardingProgressTracker {...defaultProps} />);
+      const region = screen.getByRole("region");
+      expect(region).toHaveAttribute("aria-label", "onboarding.progressTracker");
+      expect(region).toHaveAttribute("aria-live", "polite");
+    });
+
+    it("should have proper ARIA attributes for the steps list", () => {
+      render(<OnboardingProgressTracker {...defaultProps} />);
+      const list = screen.getByRole("list");
+      expect(list).toHaveAttribute("aria-label", "onboarding.stepsList");
+    });
+
+    it("should mark the current step with aria-current='step'", () => {
+      // By default currentStep is steps[0].id if not provided
+      render(<OnboardingProgressTracker {...defaultProps} currentStep="1" />);
+      const firstStepButton = screen.getByLabelText(/Step 1: Step 1. Completed. Required/i);
+      expect(firstStepButton).toHaveAttribute("aria-current", "step");
+    });
+  });
+
+  describe("Props and Variants", () => {
+    it("should not show step numbers when showStepNumbers is false", () => {
+      render(<OnboardingProgressTracker {...defaultProps} showStepNumbers={false} />);
+      expect(screen.queryByText("1")).not.toBeInTheDocument();
+      expect(screen.queryByText("2")).not.toBeInTheDocument();
+    });
+
+    it("should apply compact padding when compact prop is true", () => {
+      const { container } = render(<OnboardingProgressTracker {...defaultProps} compact={true} />);
+      const innerContainer = container.querySelector(".p-4");
+      expect(innerContainer).toBeInTheDocument();
+    });
+
+    it("should apply horizontal layout classes when orientation is horizontal", () => {
+      render(<OnboardingProgressTracker {...defaultProps} orientation="horizontal" />);
+      const list = screen.getByRole("list");
+      expect(list).toHaveClass("flex");
+      expect(list).toHaveClass("gap-4");
+    });
+  });
+});