diff --git a/src/components/progress-report/workflow/progress-report-workflow.repository.ts b/src/components/progress-report/workflow/progress-report-workflow.repository.ts
index 2fb2e7e3e7..df28df5768 100644
--- a/src/components/progress-report/workflow/progress-report-workflow.repository.ts
+++ b/src/components/progress-report/workflow/progress-report-workflow.repository.ts
@@ -16,6 +16,7 @@ import {
   createRelationships,
   currentUser,
   merge,
+  path,
   sorting,
 } from '~/core/database/query';
 import { ProgressReport, type ProgressReportStatus as Status } from '../dto';
@@ -133,16 +134,23 @@ export class ProgressReportWorkflowRepository extends DtoRepository(
     const query = this.db
       .query()
       .match([
-        node('report', 'ProgressReport', { id: reportId }),
+        node('', 'ProgressReport', { id: reportId }),
         relation('in', '', ACTIVE),
-        node('engagement', 'Engagement'),
+        node('', 'Engagement'),
         relation('in', '', 'engagement', ACTIVE),
-        node('project', 'Project'),
+        node('', 'Project'),
         relation('out', '', 'member', ACTIVE),
         node('member', 'ProjectMember'),
         relation('out', '', 'user', ACTIVE),
         node('user', 'User'),
       ])
+      .where(
+        path([
+          node('member'),
+          relation('out', '', 'inactiveAt', ACTIVE),
+          node('', 'Property', { value: null }),
+        ]),
+      )
       .match([
         node('user'),
         relation('out', '', 'email', ACTIVE),
diff --git a/src/components/project/dto/list-projects.dto.ts b/src/components/project/dto/list-projects.dto.ts
index c8f9bd9354..7df7b76ed9 100644
--- a/src/components/project/dto/list-projects.dto.ts
+++ b/src/components/project/dto/list-projects.dto.ts
@@ -1,6 +1,7 @@
 import { InputType, ObjectType } from '@nestjs/graphql';
 import { Type } from 'class-transformer';
 import { ValidateNested } from 'class-validator';
+import { set } from 'lodash';
 import {
   DateFilter,
   DateTimeFilter,
@@ -14,6 +15,7 @@ import {
   type Sensitivity,
   SortablePaginationInput,
 } from '~/common';
+import { Transform } from '~/common/transform.decorator';
 import { LocationFilters } from '../../location/dto';
 import { PartnershipFilters } from '../../partnership/dto';
 import { ProjectMemberFilters } from '../project-member/dto';
@@ -88,21 +90,17 @@ export abstract class ProjectFilters {
   @ValidateNested()
   readonly mouEnd?: DateFilter;
 
-  @OptionalField({
-    description: 'only mine',
-    deprecationReason: 'Use `isMember` instead.',
-  })
-  readonly mine?: boolean;
-
-  @OptionalField({
-    description: 'Only projects that the requesting user is a member of',
-  })
-  readonly isMember?: boolean;
-
   @FilterField(() => ProjectMemberFilters, {
     description:
       "Only projects with the requesting user's membership that matches these filters",
   })
+  @Transform(({ value, obj }) => {
+    // Only ran when GQL specifies membership
+    if (value.active == null && (obj.mine || obj.isMember)) {
+      value.active = true;
+    }
+    return value;
+  })
   readonly membership?: ProjectMemberFilters & {};
 
   @FilterField(() => ProjectMemberFilters, {
@@ -138,6 +136,28 @@ export abstract class ProjectFilters {
   readonly primaryLocation?: LocationFilters & {};
 }
 
+Object.defineProperty(ProjectFilters.prototype, 'mine', {
+  set(value: boolean) {
+    // Ensure this is set when membership has not been declared
+    value && !this.membership && set(this, 'membership.active', true);
+  },
+});
+OptionalField(() => Boolean, {
+  description: 'only mine',
+  deprecationReason: 'Use `isMember` instead.',
+})(ProjectFilters.prototype, 'mine');
+
+Object.defineProperty(ProjectFilters.prototype, 'isMember', {
+  set(value: boolean) {
+    // Ensure this is set when membership has not been declared
+    value && !this.membership && set(this, 'membership.active', true);
+  },
+});
+OptionalField(() => Boolean, {
+  description:
+    'Only projects that the requesting user is an active member of. false does nothing.',
+})(ProjectFilters.prototype, 'isMember');
+
 @InputType()
 export class ProjectListInput extends SortablePaginationInput<keyof IProject>({
   defaultSort: 'name',
diff --git a/src/components/project/dto/project.dto.ts b/src/components/project/dto/project.dto.ts
index 94aaa3eec0..1d96d3adf6 100644
--- a/src/components/project/dto/project.dto.ts
+++ b/src/components/project/dto/project.dto.ts
@@ -177,10 +177,11 @@ class Project extends Interfaces {
 
   readonly rootDirectory: Secured<LinkTo<'Directory'> | null>;
 
-  @Field({
-    description: 'Is the requesting user a member of this project?',
-  })
-  readonly isMember: boolean;
+  /** The current user's membership, if any. */
+  readonly membership:
+    | (LinkTo<'ProjectMember'> &
+        Pick<UnsecuredDto<ProjectMember>, 'roles' | 'inactiveAt'>)
+    | null;
 
   @Field({
     description: stripIndent`
diff --git a/src/components/project/project-filters.query.ts b/src/components/project/project-filters.query.ts
index d975e8dece..268c940430 100644
--- a/src/components/project/project-filters.query.ts
+++ b/src/components/project/project-filters.query.ts
@@ -30,13 +30,6 @@ export const projectFilters = filter.define(() => ProjectFilters, {
   modifiedAt: filter.dateTimeProp(),
   mouStart: filter.dateTimeProp(),
   mouEnd: filter.dateTimeProp(),
-  mine: filter.pathExistsWhenTrue([
-    currentUser,
-    relation('in', '', 'user'),
-    node('', 'ProjectMember'),
-    relation('in', '', 'member', ACTIVE),
-    node('node'),
-  ]),
   languageId: filter.pathExists((id) => [
     node('node'),
     relation('out', '', 'engagement', ACTIVE),
@@ -51,13 +44,6 @@ export const projectFilters = filter.define(() => ProjectFilters, {
     relation('out', '', 'partner', ACTIVE),
     node('', 'Partner', { id }),
   ]),
-  isMember: filter.pathExistsWhenTrue([
-    currentUser,
-    relation('in', '', 'user'),
-    node('', 'ProjectMember'),
-    relation('in', '', 'member', ACTIVE),
-    node('node'),
-  ]),
   membership: filter.sub(() => projectMemberFilters)((sub) =>
     sub.match([
       currentUser,
diff --git a/src/components/project/project-member/project-member.repository.ts b/src/components/project/project-member/project-member.repository.ts
index fb2ec16e69..5bc4df66d1 100644
--- a/src/components/project/project-member/project-member.repository.ts
+++ b/src/components/project/project-member/project-member.repository.ts
@@ -181,7 +181,13 @@ export class ProjectMemberRepository extends DtoRepository(ProjectMember) {
         relation('out', '', 'user', ACTIVE),
         node('user', 'User'),
       ])
-      .apply(projectMemberFilters({ project: { id: project }, roles }))
+      .apply(
+        projectMemberFilters({
+          project: { id: project },
+          roles,
+          active: true,
+        }),
+      )
       .with('user')
       .optionalMatch([
         node('user'),
diff --git a/src/components/project/project.gel.repository.ts b/src/components/project/project.gel.repository.ts
index b559ba5207..1a665d0a3f 100644
--- a/src/components/project/project.gel.repository.ts
+++ b/src/components/project/project.gel.repository.ts
@@ -38,6 +38,11 @@ const hydrate = e.shape(e.Project, (project) => ({
   __typename: project.__type__.name.slice(9, null),
 
   rootDirectory: true,
+  membership: {
+    id: true,
+    roles: true,
+    inactiveAt: true,
+  },
   primaryPartnership: e
     .select(project.partnerships, (p) => ({
       filter: e.op(p.primary, '=', true),
@@ -172,7 +177,8 @@ export class ProjectGelRepository
               e.op(project.modifiedAt, '<=', input.modifiedAt.beforeInclusive),
           ]
         : []),
-      input.isMember != null && e.op(project.isMember, '=', input.isMember),
+      input.membership != null && e.op('exists', project.membership),
+      input.membership?.active && e.op(project.membership.active, '?=', true),
       input.pinned != null && e.op(project.pinned, '=', input.pinned),
       input.languageId &&
         e.op(
diff --git a/src/components/project/project.repository.ts b/src/components/project/project.repository.ts
index 6a2f3579d9..893405a9de 100644
--- a/src/components/project/project.repository.ts
+++ b/src/components/project/project.repository.ts
@@ -15,12 +15,15 @@ import { CommonRepository, OnIndex, UniquenessError } from '~/core/database';
 import { type ChangesOf, getChanges } from '~/core/database/changes';
 import {
   ACTIVE,
+  collect,
   createNode,
   createRelationships,
+  currentUser,
   defineSorters,
   FullTextIndex,
   matchChangesetAndChangedProps,
   matchProjectSens,
+  matchProps,
   matchPropsAndProjectSensAndScopedRoles,
   merge,
   paginate,
@@ -89,6 +92,19 @@ export class ProjectRepository extends CommonRepository {
           relation('out', '', 'rootDirectory', ACTIVE),
           node('rootDirectory', 'Directory'),
         ])
+        .subQuery('node', (sub) =>
+          sub
+            .match([
+              node('node'),
+              relation('out', '', 'member', ACTIVE),
+              node('membership'),
+              relation('out', '', 'user'),
+              currentUser,
+            ])
+            .apply(matchProps({ nodeName: 'membership', outputVar: 'dto' }))
+            .with(collect('dto').as('dtos'))
+            .return('dtos[0] as membership'),
+        )
         .optionalMatch([
           node('node'),
           relation('out', '', 'partnership', ACTIVE),
@@ -134,7 +150,7 @@ export class ProjectRepository extends CommonRepository {
           merge('props', 'changedProps', {
             type: 'node.type',
             pinned,
-            isMember: '"member:true" in props.scope',
+            membership: 'membership',
             rootDirectory: 'rootDirectory { .id }',
             primaryPartnership: 'primaryPartnership { .id }',
             primaryLocation: 'primaryLocation { .id }',
diff --git a/src/components/project/project.resolver.ts b/src/components/project/project.resolver.ts
index 78d08842bc..053360048b 100644
--- a/src/components/project/project.resolver.ts
+++ b/src/components/project/project.resolver.ts
@@ -18,6 +18,7 @@ import {
   ListArg,
   mapSecuredValue,
   NotFoundException,
+  OptionalField,
   SecuredDateRange,
 } from '~/common';
 import { Loader, type LoaderOf } from '~/core';
@@ -83,6 +84,14 @@ class ModifyOtherLocationArgs {
   locationId: ID;
 }
 
+@ArgsType()
+class IsMemberArgs {
+  @OptionalField({
+    description: 'Consider inactive memberships as well',
+  })
+  includeInactive?: boolean;
+}
+
 @Resolver(IProject)
 export class ProjectResolver {
   constructor(private readonly projectService: ProjectService) {}
@@ -148,6 +157,19 @@ export class ProjectResolver {
     return list;
   }
 
+  @ResolveField(() => Boolean, {
+    description: 'Is the requesting user a member of this project?',
+  })
+  isMember(
+    @Parent() project: Project,
+    @Args() { includeInactive }: IsMemberArgs,
+  ): boolean {
+    return (
+      !!project.membership &&
+      (includeInactive ? true : !project.membership.inactiveAt)
+    );
+  }
+
   @ResolveField(() => String, { nullable: true })
   avatarLetters(@Parent() project: Project): string | undefined {
     return project.name.canRead && project.name.value
diff --git a/src/core/database/query/match-project-based-props.ts b/src/core/database/query/match-project-based-props.ts
index 857060714b..07a05180c8 100644
--- a/src/core/database/query/match-project-based-props.ts
+++ b/src/core/database/query/match-project-based-props.ts
@@ -58,7 +58,7 @@ export const matchProjectScopedRoles =
         .match([
           [
             node(projectVar),
-            relation('out', '', 'member'),
+            relation('out', '', 'member', ACTIVE),
             node('projectMember'),
             relation('out', '', 'user'),
             currentUser,