diff --git a/app/validators/bill-runs/two-part-tariff/adjustment-factor.validator.js b/app/validators/bill-runs/two-part-tariff/adjustment-factor.validator.js
index 2031b8024b..920d5181cc 100644
--- a/app/validators/bill-runs/two-part-tariff/adjustment-factor.validator.js
+++ b/app/validators/bill-runs/two-part-tariff/adjustment-factor.validator.js
@@ -16,7 +16,7 @@ const Joi = require('joi')
  * pre-populated with the current value for both. The user must overwrite this value with there own value to amend the
  * adjustments.
  * The validation happening here is to ensure that the adjustments have been entered. Both have a
- * minimum value of 0 and a maximum value of 1, and they both get validated to either 2 or 15 decimal places.
+ * minimum value of 0 and they both get validated to either 2 or 15 decimal places.
  *
  * @param {Object} payload - The payload from the request to be validated
  * @param {Number} maxNumberOfDecimals - The maximum number of decimal places the factor can be validated to
@@ -54,13 +54,11 @@ function _validate (quantity, maxNumberOfDecimals, validationType) {
     quantity: Joi
       .number()
       .min(0)
-      .max(1)
       .required()
       .messages({
         'number.base': `The ${validationType} factor must be a number`,
         'number.unsafe': `The ${validationType} factor must be a number`,
         'number.min': `The ${validationType} factor must be greater than 0`,
-        'number.max': `The ${validationType} factor must be equal to or less than 1`,
         'any.required': `Enter a ${validationType} factor`
       })
   })
diff --git a/app/validators/bill-runs/two-part-tariff/authorised-volume.validator.js b/app/validators/bill-runs/two-part-tariff/authorised-volume.validator.js
index dfac2e8dca..5629e28c38 100644
--- a/app/validators/bill-runs/two-part-tariff/authorised-volume.validator.js
+++ b/app/validators/bill-runs/two-part-tariff/authorised-volume.validator.js
@@ -15,7 +15,7 @@ const Joi = require('joi')
  * When editing the authorised volume on the charge reference, the user input box is pre-populated with the current
  * value. The user must overwrite this value with there own value to amend the authorised volume.
  * The validation happening here is to ensure that the volume has been entered, it has a maximum 6 decimal places and
- * is more than either the totalBillableReturns or the minVolume (whichever is more) and greater than the maxVolume.
+ * is more than the totalBillableReturns.
  *
  * @param {Object} payload - The payload from the request to be validated
  *
@@ -23,12 +23,9 @@ const Joi = require('joi')
  * any errors are found the `error:` property will also exist detailing what the issues were
  */
 function go (payload) {
-  const { authorisedVolume, totalBillableReturns, minVolume, maxVolume } = payload
+  const { authorisedVolume, totalBillableReturns } = payload
 
-  const minValue = Number(Math.max(totalBillableReturns, minVolume))
-  const maxValue = Number(maxVolume)
-
-  const validation = _validate(authorisedVolume, minValue, maxValue)
+  const validation = _validate(authorisedVolume, Number(totalBillableReturns))
 
   // The first check we are doing is validating that a number has been inputted within the correct range. If it has
   // then we can move onto next validating the number of decimal places
@@ -62,18 +59,16 @@ function _customValidation (quantity, helpers) {
   })
 }
 
-function _validate (authorisedVolume, minValue, maxValue) {
+function _validate (authorisedVolume, totalBillableReturns) {
   const schema = Joi.object({
     authorisedVolume: Joi
       .number()
-      .min(minValue)
-      .max(maxValue)
+      .min(totalBillableReturns)
       .required()
       .messages({
         'number.base': 'The authorised volume must be a number',
         'number.unsafe': 'The authorised volume must be a number or fewer than 17 digits long',
-        'number.min': `The authorised volume must be greater than ${minValue}`,
-        'number.max': `The authorised volume must be equal to or less than ${maxValue}`,
+        'number.min': `The authorised volume must be greater than ${totalBillableReturns}`,
         'any.required': 'Enter an authorised volume'
       })
   })
diff --git a/app/views/bill-runs/amend-authorised-volume.njk b/app/views/bill-runs/amend-authorised-volume.njk
index 7990b1ad4e..cdff665d9d 100644
--- a/app/views/bill-runs/amend-authorised-volume.njk
+++ b/app/views/bill-runs/amend-authorised-volume.njk
@@ -67,8 +67,6 @@
 
         {# Hidden input for authorised volume #}
         <input type="hidden" name="totalBillableReturns" value="{{ chargeReference.totalBillableReturns }}">
-        <input type="hidden" name="minVolume" value="{{ chargeCategory.minVolume }}">
-        <input type="hidden" name="maxVolume" value="{{ chargeCategory.maxVolume }}">
 
         {{ govukButton({ text: 'Confirm', preventDoubleClick: true }) }}
       </form>
diff --git a/test/validators/bill-runs/two-part-tariff/adjustment-factor.validator.test.js b/test/validators/bill-runs/two-part-tariff/adjustment-factor.validator.test.js
index 2c23b3ae39..fbf7be2133 100644
--- a/test/validators/bill-runs/two-part-tariff/adjustment-factor.validator.test.js
+++ b/test/validators/bill-runs/two-part-tariff/adjustment-factor.validator.test.js
@@ -106,23 +106,6 @@ describe('Adjustment Factor validator', () => {
       })
     })
 
-    describe('because the user entered a value greater than 1', () => {
-      beforeEach(() => {
-        payload = {
-          amendedAggregateFactor: 1.1
-        }
-
-        validationType = 'aggregate'
-      })
-
-      it('fails the validation with the message "The aggregate factor must be equal to or less than 1"', () => {
-        const result = AdjustmentFactorValidator.go(payload.amendedAggregateFactor, maxNumberOfDecimals, validationType)
-
-        expect(result.error).to.exist()
-        expect(result.error.details[0].message).to.equal('The aggregate factor must be equal to or less than 1')
-      })
-    })
-
     describe('because the user entered a value less than 0', () => {
       beforeEach(() => {
         payload = {
@@ -191,23 +174,6 @@ describe('Adjustment Factor validator', () => {
       })
     })
 
-    describe('because the user entered a value greater than 1', () => {
-      beforeEach(() => {
-        payload = {
-          amendedChargeFactor: 1.1
-        }
-
-        validationType = 'charge'
-      })
-
-      it('fails the validation with the message "The charge factor must be equal to or less than 1"', () => {
-        const result = AdjustmentFactorValidator.go(payload.amendedChargeFactor, maxNumberOfDecimals, validationType)
-
-        expect(result.error).to.exist()
-        expect(result.error.details[0].message).to.equal('The charge factor must be equal to or less than 1')
-      })
-    })
-
     describe('because the user entered a value less than 0', () => {
       beforeEach(() => {
         payload = {
diff --git a/test/validators/bill-runs/two-part-tariff/authorised-volume.validator.test.js b/test/validators/bill-runs/two-part-tariff/authorised-volume.validator.test.js
index 05535fe5b7..b8164521ce 100644
--- a/test/validators/bill-runs/two-part-tariff/authorised-volume.validator.test.js
+++ b/test/validators/bill-runs/two-part-tariff/authorised-volume.validator.test.js
@@ -18,9 +18,7 @@ describe('Authorised Volume validator', () => {
       beforeEach(() => {
         payload = {
           authorisedVolume: '10',
-          totalBillableReturns: '5',
-          minVolume: '5',
-          maxVolume: '20'
+          totalBillableReturns: '5'
         }
       })
 
@@ -36,9 +34,7 @@ describe('Authorised Volume validator', () => {
     describe('because the user did not enter an authorised volume', () => {
       beforeEach(() => {
         payload = {
-          totalBillableReturns: '5',
-          minVolume: '5',
-          maxVolume: '20'
+          totalBillableReturns: '5'
         }
       })
 
@@ -54,9 +50,7 @@ describe('Authorised Volume validator', () => {
       beforeEach(() => {
         payload = {
           authorisedVolume: 'Hello World',
-          totalBillableReturns: '5',
-          minVolume: '5',
-          maxVolume: '20'
+          totalBillableReturns: '5'
         }
       })
 
@@ -72,9 +66,7 @@ describe('Authorised Volume validator', () => {
       beforeEach(() => {
         payload = {
           authorisedVolume: '5',
-          totalBillableReturns: '6',
-          minVolume: '5',
-          maxVolume: '20'
+          totalBillableReturns: '6'
         }
       })
 
@@ -86,49 +78,11 @@ describe('Authorised Volume validator', () => {
       })
     })
 
-    describe('because the user entered a number less than the minVolume', () => {
-      beforeEach(() => {
-        payload = {
-          authorisedVolume: '5',
-          totalBillableReturns: '5',
-          minVolume: '6',
-          maxVolume: '20'
-        }
-      })
-
-      it('fails the validation with the message "The authorised volume must be greater than 6"', () => {
-        const result = AuthorisedVolumeValidator.go(payload)
-
-        expect(result.error).to.exist()
-        expect(result.error.details[0].message).to.equal('The authorised volume must be greater than 6')
-      })
-    })
-
-    describe('because the user entered a number greater than the max volume', () => {
-      beforeEach(() => {
-        payload = {
-          authorisedVolume: '25',
-          totalBillableReturns: '5',
-          minVolume: '6',
-          maxVolume: '20'
-        }
-      })
-
-      it('fails the validation with the message "The authorised volume must be equal to or less than 20"', () => {
-        const result = AuthorisedVolumeValidator.go(payload)
-
-        expect(result.error).to.exist()
-        expect(result.error.details[0].message).to.equal('The authorised volume must be equal to or less than 20')
-      })
-    })
-
     describe('because the user entered too many decimal places', () => {
       beforeEach(() => {
         payload = {
           authorisedVolume: '15.1234567',
-          totalBillableReturns: '5',
-          minVolume: '6',
-          maxVolume: '20'
+          totalBillableReturns: '5'
         }
       })