diff --git a/backend/src/config/index.ts b/backend/src/config/index.ts
index 75c985e63..ed8a893a2 100644
--- a/backend/src/config/index.ts
+++ b/backend/src/config/index.ts
@@ -1,8 +1,14 @@
 // ATTENTION: DO NOT PUT ANY SECRETS IN HERE (or the .env)
 
 import dotenv from 'dotenv'
+import Decimal from 'decimal.js-light'
 dotenv.config()
 
+Decimal.set({
+  precision: 25,
+  rounding: Decimal.ROUND_HALF_UP,
+})
+
 const constants = {
   DB_VERSION: '0028-clean_transaction_table',
   DECAY_START_TIME: new Date('2021-05-13 17:46:31'), // GMT+0
diff --git a/backend/src/graphql/arg/TransactionSendArgs.ts b/backend/src/graphql/arg/TransactionSendArgs.ts
index 49a3fb5e8..e75921383 100644
--- a/backend/src/graphql/arg/TransactionSendArgs.ts
+++ b/backend/src/graphql/arg/TransactionSendArgs.ts
@@ -1,5 +1,5 @@
 import { ArgsType, Field } from 'type-graphql'
-import Decimal from '../../util/decimal'
+import Decimal from 'decimal.js-light'
 
 @ArgsType()
 export default class TransactionSendArgs {
diff --git a/backend/src/graphql/model/Balance.ts b/backend/src/graphql/model/Balance.ts
index 7d2be38c4..aaeecd0d7 100644
--- a/backend/src/graphql/model/Balance.ts
+++ b/backend/src/graphql/model/Balance.ts
@@ -1,7 +1,7 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 import { ObjectType, Field } from 'type-graphql'
-import Decimal from '../../util/decimal'
+import Decimal from 'decimal.js-light'
 
 @ObjectType()
 export class Balance {
diff --git a/backend/src/graphql/model/Decay.ts b/backend/src/graphql/model/Decay.ts
index ab70ab6f8..71cacb216 100644
--- a/backend/src/graphql/model/Decay.ts
+++ b/backend/src/graphql/model/Decay.ts
@@ -1,7 +1,7 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 import { ObjectType, Field } from 'type-graphql'
-import Decimal from '../../util/decimal'
+import Decimal from 'decimal.js-light'
 
 @ObjectType()
 export class Decay {
diff --git a/backend/src/graphql/model/Transaction.ts b/backend/src/graphql/model/Transaction.ts
index 4d19479c7..4c9caed4e 100644
--- a/backend/src/graphql/model/Transaction.ts
+++ b/backend/src/graphql/model/Transaction.ts
@@ -3,7 +3,7 @@
 import { ObjectType, Field } from 'type-graphql'
 import { Decay } from './Decay'
 import { Transaction as dbTransaction } from '@entity/Transaction'
-import Decimal from '../../util/decimal'
+import Decimal from 'decimal.js-light'
 import { TransactionTypeId } from '../enum/TransactionTypeId'
 import { User } from './User'
 
diff --git a/backend/src/graphql/model/TransactionList.ts b/backend/src/graphql/model/TransactionList.ts
index 91beb01ac..d4fcb65eb 100644
--- a/backend/src/graphql/model/TransactionList.ts
+++ b/backend/src/graphql/model/TransactionList.ts
@@ -2,7 +2,7 @@
 /* eslint-disable @typescript-eslint/explicit-module-boundary-types */
 import { ObjectType, Field } from 'type-graphql'
 import CONFIG from '../../config'
-import Decimal from '../../util/decimal'
+import Decimal from 'decimal.js-light'
 import { Transaction } from './Transaction'
 
 @ObjectType()
diff --git a/backend/src/graphql/resolver/AdminResolver.ts b/backend/src/graphql/resolver/AdminResolver.ts
index b1b68e521..1ee7f326c 100644
--- a/backend/src/graphql/resolver/AdminResolver.ts
+++ b/backend/src/graphql/resolver/AdminResolver.ts
@@ -27,7 +27,7 @@ import { hasElopageBuys } from '../../util/hasElopageBuys'
 import { LoginEmailOptIn } from '@entity/LoginEmailOptIn'
 import { User } from '@entity/User'
 import { TransactionTypeId } from '../enum/TransactionTypeId'
-import Decimal from '../../util/decimal'
+import Decimal from 'decimal.js-light'
 
 // const EMAIL_OPT_IN_REGISTER = 1
 // const EMAIL_OPT_UNKNOWN = 3 // elopage?
diff --git a/backend/src/graphql/resolver/BalanceResolver.ts b/backend/src/graphql/resolver/BalanceResolver.ts
index 1680ba8d7..e536093bb 100644
--- a/backend/src/graphql/resolver/BalanceResolver.ts
+++ b/backend/src/graphql/resolver/BalanceResolver.ts
@@ -8,7 +8,7 @@ import { UserRepository } from '../../typeorm/repository/User'
 import { calculateDecay } from '../../util/decay'
 import { RIGHTS } from '../../auth/RIGHTS'
 import { Transaction } from '@entity/Transaction'
-import Decimal from '../../util/decimal'
+import Decimal from 'decimal.js-light'
 
 @Resolver()
 export class BalanceResolver {
diff --git a/backend/src/graphql/scalar/Decimal.ts b/backend/src/graphql/scalar/Decimal.ts
index d10d36337..da5a99e0c 100644
--- a/backend/src/graphql/scalar/Decimal.ts
+++ b/backend/src/graphql/scalar/Decimal.ts
@@ -1,5 +1,5 @@
 import { GraphQLScalarType, Kind } from 'graphql'
-import Decimal from '../../util/decimal'
+import Decimal from 'decimal.js-light'
 
 export default new GraphQLScalarType({
   name: 'Decimal',
diff --git a/backend/src/graphql/schema.ts b/backend/src/graphql/schema.ts
index 54ee89c42..f14f45efa 100644
--- a/backend/src/graphql/schema.ts
+++ b/backend/src/graphql/schema.ts
@@ -4,7 +4,7 @@ import path from 'path'
 
 import isAuthorized from './directive/isAuthorized'
 import DecimalScalar from './scalar/Decimal'
-import Decimal from '../util/decimal'
+import Decimal from 'decimal.js-light'
 
 const schema = async (): Promise<GraphQLSchema> => {
   return buildSchema({
diff --git a/backend/src/mailer/sendTransactionReceivedEmail.test.ts b/backend/src/mailer/sendTransactionReceivedEmail.test.ts
index ce1d50920..5fd013650 100644
--- a/backend/src/mailer/sendTransactionReceivedEmail.test.ts
+++ b/backend/src/mailer/sendTransactionReceivedEmail.test.ts
@@ -1,6 +1,6 @@
 import { sendTransactionReceivedEmail } from './sendTransactionReceivedEmail'
 import { sendEMail } from './sendEMail'
-import Decimal from '../util/decimal'
+import Decimal from 'decimal.js-light'
 
 jest.mock('./sendEMail', () => {
   return {
diff --git a/backend/src/mailer/sendTransactionReceivedEmail.ts b/backend/src/mailer/sendTransactionReceivedEmail.ts
index d4a97eab7..3b417b10a 100644
--- a/backend/src/mailer/sendTransactionReceivedEmail.ts
+++ b/backend/src/mailer/sendTransactionReceivedEmail.ts
@@ -1,4 +1,4 @@
-import Decimal from '../util/decimal'
+import Decimal from 'decimal.js-light'
 import { sendEMail } from './sendEMail'
 import { transactionReceived } from './text/transactionReceived'
 
diff --git a/backend/src/mailer/text/transactionReceived.ts b/backend/src/mailer/text/transactionReceived.ts
index 747e30bdf..f685c60ae 100644
--- a/backend/src/mailer/text/transactionReceived.ts
+++ b/backend/src/mailer/text/transactionReceived.ts
@@ -1,4 +1,4 @@
-import Decimal from '../../util/decimal'
+import Decimal from 'decimal.js-light'
 
 export const transactionReceived = {
   de: {
diff --git a/backend/src/util/decay.test.ts b/backend/src/util/decay.test.ts
index 31d8905b2..1653376c1 100644
--- a/backend/src/util/decay.test.ts
+++ b/backend/src/util/decay.test.ts
@@ -1,4 +1,4 @@
-import Decimal from './decimal'
+import Decimal from 'decimal.js-light'
 import 'reflect-metadata' // This might be wise to load in a test setup file
 import { decayFormula, calculateDecay } from './decay'
 
diff --git a/backend/src/util/decay.ts b/backend/src/util/decay.ts
index 49317ad85..061269dab 100644
--- a/backend/src/util/decay.ts
+++ b/backend/src/util/decay.ts
@@ -1,4 +1,4 @@
-import Decimal from './decimal'
+import Decimal from 'decimal.js-light'
 import CONFIG from '../config'
 import { Decay } from '../graphql/model/Decay'
 
diff --git a/backend/src/util/decimal.ts b/backend/src/util/decimal.ts
deleted file mode 100644
index 3f32a850e..000000000
--- a/backend/src/util/decimal.ts
+++ /dev/null
@@ -1,8 +0,0 @@
-import Decimal from 'decimal.js-light'
-
-Decimal.set({
-  precision: 25,
-  rounding: Decimal.ROUND_HALF_UP,
-})
-
-export default Decimal
diff --git a/backend/src/util/validate.ts b/backend/src/util/validate.ts
index 2f9017447..dc3aadbec 100644
--- a/backend/src/util/validate.ts
+++ b/backend/src/util/validate.ts
@@ -1,5 +1,5 @@
 import { calculateDecay } from './decay'
-import Decimal from './decimal'
+import Decimal from 'decimal.js-light'
 import { Transaction } from '@entity/Transaction'
 
 function isStringBoolean(value: string): boolean {
diff --git a/backend/src/util/virtualDecayTransaction.ts b/backend/src/util/virtualDecayTransaction.ts
index c6b7391f1..f5f35823f 100644
--- a/backend/src/util/virtualDecayTransaction.ts
+++ b/backend/src/util/virtualDecayTransaction.ts
@@ -1,5 +1,5 @@
 /* eslint-disable @typescript-eslint/no-unused-vars */
-import Decimal from './decimal'
+import Decimal from 'decimal.js-light'
 import { SaveOptions, RemoveOptions } from '@dbTools/typeorm'
 import { Transaction as dbTransaction } from '@entity/Transaction'
 import { calculateDecay } from './decay'