diff --git a/docs/testing/TRUST_BADGE_TESTS.md b/docs/testing/TRUST_BADGE_TESTS.md
new file mode 100644
index 0000000..07fe037
--- /dev/null
+++ b/docs/testing/TRUST_BADGE_TESTS.md
@@ -0,0 +1,17 @@
+# TrustBadge Test Coverage
+
+`src/components/__tests__/TrustBadge.test.tsx` covers the TrustBadge component with React Testing Library and Vitest.
+
+Covered behavior:
+
+- Every supported `TrustLevel` value renders its visible label and icon.
+- Tooltip-enabled badges expose the tooltip text through `aria-describedby`.
+- `showTooltip={false}` removes the tooltip and accessible description.
+- Custom `className` values are merged without dropping trust-level styling.
+- Unknown trust levels fall back to the unverified badge copy.
+
+Run the focused test locally with:
+
+```bash
+pnpm test -- --run src/components/__tests__/TrustBadge.test.tsx
+```
diff --git a/src/components/TrustBadge.tsx b/src/components/TrustBadge.tsx
index 2cb714f..8960c86 100644
--- a/src/components/TrustBadge.tsx
+++ b/src/components/TrustBadge.tsx
@@ -16,6 +16,9 @@ export const TrustBadge: React.FC<TrustBadgeProps> = ({
   className = '',
   showTooltip = true 
 }) => {
+  const tooltipId = React.useId();
+  const tooltipDescriptionId = `${tooltipId}-description`;
+
   const getBadgeConfig = () => {
     switch (level) {
       case 'verified':
@@ -46,13 +49,22 @@ export const TrustBadge: React.FC<TrustBadgeProps> = ({
   const config = getBadgeConfig();
 
   return (
-    <div className={`group relative inline-flex items-center gap-1.5 px-2 py-0.5 rounded-full border text-[10px] font-bold uppercase tracking-wider ${config.colorClass} ${className}`}>
+    <div
+      aria-describedby={showTooltip ? tooltipDescriptionId : undefined}
+      aria-label={config.label}
+      role="status"
+      className={`group relative inline-flex items-center gap-1.5 px-2 py-0.5 rounded-full border text-[10px] font-bold uppercase tracking-wider ${config.colorClass} ${className}`}
+    >
       {config.icon}
       {config.label}
       
       {showTooltip && (
-        <div className="absolute bottom-full left-1/2 -translate-x-1/2 mb-2 w-48 p-2 rounded-lg bg-[#1A1A1A] border border-white/10 shadow-2xl opacity-0 group-hover:opacity-100 transition-opacity pointer-events-none z-50 text-[11px] normal-case tracking-normal font-medium leading-relaxed text-white/70">
-          <p>{config.description}</p>
+        <div
+          id={tooltipId}
+          role="tooltip"
+          className="absolute bottom-full left-1/2 -translate-x-1/2 mb-2 w-48 p-2 rounded-lg bg-[#1A1A1A] border border-white/10 shadow-2xl opacity-0 group-hover:opacity-100 transition-opacity pointer-events-none z-50 text-[11px] normal-case tracking-normal font-medium leading-relaxed text-white/70"
+        >
+          <p id={tooltipDescriptionId}>{config.description}</p>
           <div className="mt-1 flex items-center gap-1 text-[9px] text-[#0FF0FC]">
             <Info className="w-2.5 h-2.5" />
             Learn about trust levels
diff --git a/src/components/__tests__/TrustBadge.test.tsx b/src/components/__tests__/TrustBadge.test.tsx
new file mode 100644
index 0000000..0fd1be0
--- /dev/null
+++ b/src/components/__tests__/TrustBadge.test.tsx
@@ -0,0 +1,91 @@
+// @vitest-environment happy-dom
+
+import { render, screen } from "@testing-library/react";
+import { describe, expect, it } from "vitest";
+
+import { TrustBadge, type TrustLevel } from "../TrustBadge";
+
+const trustLevels: Array<{
+  level: TrustLevel;
+  label: string;
+  description: string;
+}> = [
+  {
+    level: "verified",
+    label: "Verified Seller",
+    description:
+      "Identity and historical performance have been verified by Commitlabs.",
+  },
+  {
+    level: "reputable",
+    label: "Top Reputation",
+    description:
+      "Seller has a high successful commitment rate and positive community feedback.",
+  },
+  {
+    level: "unverified",
+    label: "Self-Reported",
+    description:
+      "This seller has not yet completed the verification process. Exercise caution.",
+  },
+];
+
+describe("TrustBadge", () => {
+  it.each(trustLevels)(
+    "renders a visible and accessible label for the $level trust level",
+    ({ level, label }) => {
+      render(<TrustBadge level={level} showTooltip={false} />);
+
+      const badge = screen.getByRole("status", { name: label });
+
+      expect(badge).toHaveTextContent(label);
+      expect(badge.querySelector("svg")).toBeInTheDocument();
+    },
+  );
+
+  it.each(trustLevels)(
+    "links the $level tooltip to the badge when tooltips are enabled",
+    ({ level, label, description }) => {
+      render(<TrustBadge level={level} showTooltip />);
+
+      const badge = screen.getByRole("status", { name: label });
+      const tooltip = screen.getByRole("tooltip");
+
+      expect(tooltip).toHaveTextContent(description);
+      expect(tooltip).toHaveTextContent("Learn about trust levels");
+      expect(badge).toHaveAccessibleDescription(description);
+    },
+  );
+
+  it("does not render or describe a tooltip when showTooltip is false", () => {
+    render(<TrustBadge level="verified" showTooltip={false} />);
+
+    expect(screen.queryByRole("tooltip")).not.toBeInTheDocument();
+    expect(
+      screen.getByRole("status", { name: "Verified Seller" }),
+    ).not.toHaveAccessibleDescription();
+  });
+
+  it("merges custom className values without removing the trust level styling", () => {
+    render(
+      <TrustBadge
+        level="reputable"
+        className="marketplace-row-badge"
+        showTooltip={false}
+      />,
+    );
+
+    const badge = screen.getByRole("status", { name: "Top Reputation" });
+
+    expect(badge).toHaveClass("marketplace-row-badge");
+    expect(badge.className).toContain("text-[#51A2FF]");
+  });
+
+  it("falls back to the unverified badge for unknown trust levels", () => {
+    render(<TrustBadge level={"unknown" as TrustLevel} showTooltip={false} />);
+
+    expect(
+      screen.getByRole("status", { name: "Self-Reported" }),
+    ).toHaveTextContent("Self-Reported");
+  });
+});