diff --git a/backend/alembic/env.py b/backend/alembic/env.py
index fbc41435..4256625f 100644
--- a/backend/alembic/env.py
+++ b/backend/alembic/env.py
@@ -19,6 +19,7 @@ from app.models.survey_invite import SurveyInvite
 from app.models.ai_suggestion import AISuggestion  # noqa: F401
 from app.models.kb_import import KBImport, KBImportNode  # noqa: F401
 from app.models.script_template import ScriptCategory, ScriptTemplate, ScriptGeneration  # noqa: F401
+from app.models.psa_connection import PsaConnection  # noqa: F401
 from app.core.config import settings
 
 # this is the Alembic Config object
diff --git a/backend/alembic/versions/058_add_psa_connections.py b/backend/alembic/versions/058_add_psa_connections.py
new file mode 100644
index 00000000..83a489bc
--- /dev/null
+++ b/backend/alembic/versions/058_add_psa_connections.py
@@ -0,0 +1,39 @@
+"""Add psa_connections table.
+
+Revision ID: 058
+Revises: 057
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+revision = "058"
+down_revision = "057"
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "psa_connections",
+        sa.Column("id", postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column("account_id", postgresql.UUID(as_uuid=True), nullable=False),
+        sa.Column("provider", sa.String(50), nullable=False),
+        sa.Column("display_name", sa.String(100), nullable=False),
+        sa.Column("site_url", sa.String(255), nullable=False),
+        sa.Column("company_id", sa.String(100), nullable=False),
+        sa.Column("credentials_encrypted", sa.Text(), nullable=False),
+        sa.Column("is_active", sa.Boolean(), nullable=False, server_default=sa.text("true")),
+        sa.Column("last_validated_at", sa.DateTime(timezone=True), nullable=True),
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
+        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False, server_default=sa.func.now()),
+        sa.PrimaryKeyConstraint("id"),
+        sa.ForeignKeyConstraint(["account_id"], ["accounts.id"], ondelete="CASCADE"),
+        sa.UniqueConstraint("account_id"),
+    )
+    op.create_index("ix_psa_connections_account_id", "psa_connections", ["account_id"])
+
+
+def downgrade() -> None:
+    op.drop_index("ix_psa_connections_account_id")
+    op.drop_table("psa_connections")
diff --git a/backend/app/models/__init__.py b/backend/app/models/__init__.py
index 06003af7..afdaeb27 100644
--- a/backend/app/models/__init__.py
+++ b/backend/app/models/__init__.py
@@ -36,6 +36,7 @@ from .survey_response import SurveyResponse
 from .survey_invite import SurveyInvite
 from .kb_import import KBImport, KBImportNode
 from .script_template import ScriptCategory, ScriptTemplate, ScriptGeneration
+from .psa_connection import PsaConnection
 
 __all__ = [
     "User",
@@ -86,4 +87,5 @@ __all__ = [
     "ScriptCategory",
     "ScriptTemplate",
     "ScriptGeneration",
+    "PsaConnection",
 ]
diff --git a/backend/app/models/account.py b/backend/app/models/account.py
index 351a48b7..7792e9b8 100644
--- a/backend/app/models/account.py
+++ b/backend/app/models/account.py
@@ -15,6 +15,7 @@ if TYPE_CHECKING:
     from app.models.step_category import StepCategory
     from app.models.step_library import StepLibrary
     from app.models.account_limit_override import AccountLimitOverride
+    from app.models.psa_connection import PsaConnection
 
 
 class Account(Base):
@@ -53,3 +54,4 @@ class Account(Base):
     step_categories: Mapped[list["StepCategory"]] = relationship("StepCategory", foreign_keys="[StepCategory.account_id]", back_populates="account")
     step_library: Mapped[list["StepLibrary"]] = relationship("StepLibrary", foreign_keys="[StepLibrary.account_id]", back_populates="account")
     limit_override: Mapped[Optional["AccountLimitOverride"]] = relationship("AccountLimitOverride", back_populates="account", uselist=False)
+    psa_connection: Mapped[Optional["PsaConnection"]] = relationship("PsaConnection", back_populates="account", uselist=False)
diff --git a/backend/app/models/psa_connection.py b/backend/app/models/psa_connection.py
new file mode 100644
index 00000000..8cdd609e
--- /dev/null
+++ b/backend/app/models/psa_connection.py
@@ -0,0 +1,48 @@
+"""PSA connection model — one per account."""
+import uuid
+from datetime import datetime, timezone
+from typing import Optional
+
+from sqlalchemy import String, DateTime, Boolean, Text, ForeignKey
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+from sqlalchemy.dialects.postgresql import UUID
+
+from app.core.database import Base
+
+
+class PsaConnection(Base):
+    __tablename__ = "psa_connections"
+
+    id: Mapped[uuid.UUID] = mapped_column(
+        UUID(as_uuid=True), primary_key=True, default=uuid.uuid4
+    )
+    account_id: Mapped[uuid.UUID] = mapped_column(
+        UUID(as_uuid=True),
+        ForeignKey("accounts.id", ondelete="CASCADE"),
+        nullable=False,
+        unique=True,
+        index=True,
+    )
+    provider: Mapped[str] = mapped_column(String(50), nullable=False)
+    display_name: Mapped[str] = mapped_column(String(100), nullable=False)
+    site_url: Mapped[str] = mapped_column(String(255), nullable=False)
+    company_id: Mapped[str] = mapped_column(String(100), nullable=False)
+    credentials_encrypted: Mapped[str] = mapped_column(Text, nullable=False)
+    is_active: Mapped[bool] = mapped_column(Boolean, nullable=False, default=True)
+    last_validated_at: Mapped[Optional[datetime]] = mapped_column(
+        DateTime(timezone=True), nullable=True
+    )
+    created_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True),
+        nullable=False,
+        default=lambda: datetime.now(timezone.utc),
+    )
+    updated_at: Mapped[datetime] = mapped_column(
+        DateTime(timezone=True),
+        nullable=False,
+        default=lambda: datetime.now(timezone.utc),
+        onupdate=lambda: datetime.now(timezone.utc),
+    )
+
+    # Relationships
+    account = relationship("Account", back_populates="psa_connection")