diff --git a/TaxBaik.Application/Services/TaxProfileService.cs b/TaxBaik.Application/Services/TaxProfileService.cs
index a3e48c2..4b55828 100644
--- a/TaxBaik.Application/Services/TaxProfileService.cs
+++ b/TaxBaik.Application/Services/TaxProfileService.cs
@@ -37,7 +37,10 @@ public class TaxProfileService(ITaxProfileRepository repository)
     public async Task UpdateAsync(int profileId, string? businessType, string? accountingMethod,
         DateTime? nextFilingDueDate, string taxRiskLevel = "normal", CancellationToken ct = default)
     {
-        var profile = new TaxProfile { Id = profileId };
+        var profile = await repository.GetByIdAsync(profileId, ct);
+        if (profile == null)
+            throw new ValidationException("세무 프로필을 찾을 수 없습니다.");
+
         if (!string.IsNullOrWhiteSpace(businessType))
             profile.BusinessType = businessType.Trim();
         if (!string.IsNullOrWhiteSpace(accountingMethod))
diff --git a/TaxBaik.Domain/Interfaces/ITaxProfileRepository.cs b/TaxBaik.Domain/Interfaces/ITaxProfileRepository.cs
index b40eab9..c4c5972 100644
--- a/TaxBaik.Domain/Interfaces/ITaxProfileRepository.cs
+++ b/TaxBaik.Domain/Interfaces/ITaxProfileRepository.cs
@@ -5,6 +5,7 @@ using TaxBaik.Domain.Entities;
 public interface ITaxProfileRepository
 {
     Task<int> CreateAsync(TaxProfile profile, CancellationToken cancellationToken = default);
+    Task<TaxProfile?> GetByIdAsync(int id, CancellationToken cancellationToken = default);
     Task<IEnumerable<TaxProfile>> GetAllAsync(CancellationToken cancellationToken = default);
     Task<TaxProfile?> GetByClientIdAsync(int clientId, CancellationToken cancellationToken = default);
     Task UpdateAsync(TaxProfile profile, CancellationToken cancellationToken = default);
diff --git a/TaxBaik.Infrastructure/Repositories/TaxProfileRepository.cs b/TaxBaik.Infrastructure/Repositories/TaxProfileRepository.cs
index c4a1822..8f6c743 100644
--- a/TaxBaik.Infrastructure/Repositories/TaxProfileRepository.cs
+++ b/TaxBaik.Infrastructure/Repositories/TaxProfileRepository.cs
@@ -20,6 +20,17 @@ public class TaxProfileRepository(IDbConnectionFactory connectionFactory) : Base
             profile);
     }
 
+    public async Task<TaxProfile?> GetByIdAsync(int id, CancellationToken cancellationToken = default)
+    {
+        using var conn = Conn();
+        return await conn.QueryFirstOrDefaultAsync<TaxProfile>(
+            @"SELECT id, client_id, business_registration, business_type, establishment_date,
+              annual_revenue_range, employee_count, accounting_method, fiscal_year_end, last_filing_date,
+              next_filing_due_date, tax_risk_level, previous_audit_history, special_notes, created_at, updated_at
+              FROM tax_profiles WHERE id = @Id",
+            new { Id = id });
+    }
+
     public async Task<IEnumerable<TaxProfile>> GetAllAsync(CancellationToken cancellationToken = default)
     {
         using var conn = Conn();
diff --git a/tests/e2e/admin-responsive.spec.ts b/tests/e2e/admin-responsive.spec.ts
index b548b5a..97fcc51 100644
--- a/tests/e2e/admin-responsive.spec.ts
+++ b/tests/e2e/admin-responsive.spec.ts
@@ -15,7 +15,7 @@ const TEST_PASSWORD = process.env.E2E_ADMIN_PASSWORD || 'TestAdmin@123456';
  * - 운영(localhost): http://localhost/taxbaik (Nginx 라우팅 → active 포트)
  * - 로컬 직접 테스트: http://127.0.0.1:5001/taxbaik (개발 포트)
  */
-const baseUrl = (process.env.E2E_BASE_URL ?? 'http://localhost/taxbaik').replace(/\/$/, '');
+const baseUrl = (process.env.E2E_BASE_URL ?? 'http://178.104.200.7/taxbaik').replace(/\/$/, '');
 
 /**
  * API를 통한 테스트 데이터 생성