diff --git a/backend/src/event/Event.ts b/backend/src/event/Event.ts
index 6a1233224..786d48eed 100644
--- a/backend/src/event/Event.ts
+++ b/backend/src/event/Event.ts
@@ -298,6 +298,13 @@ export class Event {
     return this
   }
 
+  public setEventAdminContributionDeny(ev: EventAdminContributionDeny): Event {
+    this.setByBasicCt(ev.userId, ev.contributionId, ev.amount)
+    this.type = EventProtocolType.ADMIN_CONTRIBUTION_DENY
+
+    return this
+  }
+
   public setEventAdminContributionUpdate(ev: EventAdminContributionUpdate): Event {
     this.setByBasicCt(ev.userId, ev.contributionId, ev.amount)
     this.type = EventProtocolType.ADMIN_CONTRIBUTION_UPDATE
diff --git a/backend/src/graphql/resolver/ContributionResolver.ts b/backend/src/graphql/resolver/ContributionResolver.ts
index bf80bcb4d..01a681e52 100644
--- a/backend/src/graphql/resolver/ContributionResolver.ts
+++ b/backend/src/graphql/resolver/ContributionResolver.ts
@@ -44,6 +44,7 @@ import {
   EventContributionConfirm,
   EventAdminContributionCreate,
   EventAdminContributionDelete,
+  EventAdminContributionDeny,
   EventAdminContributionUpdate,
 } from '@/event/Event'
 import { writeEvent } from '@/event/EventProtocolEmitter'
@@ -559,6 +560,56 @@ export class ContributionResolver {
     return !!res
   }
 
+  @Authorized([RIGHTS.ADMIN_DENY_CONTRIBUTION])
+  @Mutation(() => Boolean)
+  async adminDenyContribution(
+    @Arg('id', () => Int) id: number,
+    @Ctx() context: Context,
+  ): Promise<boolean> {
+    const contribution = await DbContribution.findOne(id)
+    if (!contribution) {
+      logger.error(`Contribution not found for given id: ${id}`)
+      throw new Error('Contribution not found for given id.')
+    }
+    if (contribution.confirmedAt) {
+      logger.error('A confirmed contribution can not be denied')
+      throw new Error('A confirmed contribution can not be denied')
+    }
+    const moderator = getUser(context)
+    if (
+      contribution.contributionType === ContributionType.USER &&
+      contribution.userId === moderator.id
+    ) {
+      throw new Error('Own contribution can not be denied as admin')
+    }
+    const user = await DbUser.findOneOrFail(
+      { id: contribution.userId },
+      { relations: ['emailContact'] },
+    )
+    contribution.contributionStatus = ContributionStatus.DENIED
+    contribution.deniedBy = moderator.id
+    await contribution.save()
+    const res = await contribution.softRemove()
+
+    const event = new Event()
+    const eventAdminContributionDeny = new EventAdminContributionDeny()
+    eventAdminContributionDeny.userId = contribution.userId
+    eventAdminContributionDeny.amount = contribution.amount
+    eventAdminContributionDeny.contributionId = contribution.id
+    await writeEvent(event.setEventAdminContributionDeny(eventAdminContributionDeny))
+    sendContributionDeniedEmail({
+      firstName: user.firstName,
+      lastName: user.lastName,
+      email: user.emailContact.email,
+      language: user.language,
+      senderFirstName: moderator.firstName,
+      senderLastName: moderator.lastName,
+      contributionMemo: contribution.memo,
+    })
+
+    return !!res
+  }
+
   @Authorized([RIGHTS.CONFIRM_CONTRIBUTION])
   @Mutation(() => Boolean)
   async confirmContribution(