Because the sum is worked out again from scratch every pay period on that period’s net earnings, and because the balance it is collecting is bigger than the bill you remember. Neither of those is an error.

Sometimes it is an error, and that is checkable in about five minutes. The bands are published and the calculation is mechanical.

Part of your pay is protected by law
The deduction is set by statutory tables, not the creditor
An arrestment can be stopped or replaced

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This page is a diagnosis rather than an explanation of the tables. Work down it until something matches your payslip.

One thing to settle at the outset. A sheriff cannot reduce a Schedule 2 deduction because you cannot afford it, so whether an arrestment can take more than half your wages is the honest place to start on the arithmetic.

Why is the deduction different from the figure you worked out?

Because it is banded rather than a flat percentage, and it is applied to net earnings for that period rather than to your usual pay. Every period is calculated on its own.

What section 47(1) requires on every pay day

Your employer is not instructed to take a set sum. Section 47(1) of the Debtors (Scotland) Act 1987 requires them to deduct a sum calculated under the Act from your net earnings on every pay day, so the figure comes from the Schedule 2 tables.

Those tables have applied since 6 April 2025 under the Diligence against Earnings (Variation) (Scotland) Regulations 2024.

The figure they apply the table to is net earnings, which is a defined figure rather than take-home pay. What counts as net earnings lists exactly what comes off first.

Start with the diagnosis

What you are seeing What explains it Where to check it
The deduction is bigger than last month A bigger pay period. Overtime, commission, a bonus or a backdated payment all feed into net earnings for the period they are paid in Your payslip for that period, against the band it falls into
The deduction is bigger than the figure you calculated A gross figure used in your head where payroll correctly used the net one The net earnings figure payroll applied
There is a stubborn extra pound The employer's administration charge of £1.00 per deduction, taken on top of the arrested amount The payslip, where it sits separately from the arrested sum
Two deduction lines on the same payslip A different kind of deduction running alongside, calculated under its own rules Ask payroll which order each line is operating under
The balance is far bigger than the original bill A 10% statutory addition on council tax, added by the council on grant of the summary warrant, and sheriff officer fees recoverable through the diligence A written statement of account from the creditor or the firm
The deduction came back after months of nothing Net earnings rose back above the protected threshold, and the arrestment had never ended The two payslips either side of the change
The figure looks wrong for how often you are paid The wrong table for the pay frequency, or a fortnightly period run on an unexpected basis Ask payroll which table they applied and why

Not every row there points to an error, and several are the tables behaving normally. Whether the deduction is taken before or after tax settles the second row on its own.

Did overtime or a bonus land in that pay period?

A period with overtime, commission or a bonus in it is a bigger period on the same table, so it produces a bigger deduction for that period alone. The calculation looks at the period rather than at your annual average.

What one busy month costs

Net earnings of £1,900.00 a month give £192.50. Add £500.00 of overtime to the same month and the deduction is £292.50, which is £100.00 more.

The pay period Net earnings for that period Deduction
A normal month £1,900.00 £192.50
The same month with overtime in it £2,400.00 £292.50
A month well into the top band £3,900.00 £700.00

The effect is sharpest at the top, where half of every extra pound above £3,750.00 net a month goes to the arrestment. Whether overtime increases the deduction works through the mechanics.

It comes back down again

A quieter period produces a smaller deduction, and net earnings below the protected threshold produce none at all. What happens if you earn below the threshold covers that period.

The deduction is worked out from the net earnings actually paid in that period, so each period stands on its own.

Is more than one deduction running on the same payslip?

It can be, lawfully. Only one diligence against earnings can operate against the same employment at a time, but a current maintenance arrestment can run alongside an earnings arrestment, and other orders sit outside that rule entirely.

Which deduction is which

The deduction How it is calculated The floor that applies
Earnings arrestment The Schedule 2 tables, applied to net earnings for the period A fixed cash nil band and no percentage cap at all
Conjoined arrestment order The same calculation, where more than one creditor is involved The same nil band, with the money going to the sheriff clerk
Current maintenance arrestment A daily maintenance rate, and it can run alongside an earnings arrestment A protected daily rate of £24.66
Child maintenance deduction from earnings order Its own rules, and it comes off before net earnings are worked out under section 73(1)(d) The employee keeps at least 60% of net earnings
Direct Earnings Attachment Its own percentage rates, and it sits below the priority orders The employee is left with at least 60% of net wage, measured against total deductions

The 60% floor belongs to a Direct Earnings Attachment and a child maintenance order, and the employer guide to Direct Earnings Attachments sets it out. It does not apply to a Scottish earnings arrestment.

How a child maintenance order can outrank an arrestment

A child maintenance deduction from earnings order can outrank an earnings arrestment. Section 73(1)(d) takes off, before net earnings are worked out, any deduction from earnings order that the child support regulations give priority over diligences against earnings, so the tables are then applied to what is left.

That is a statutory mechanism rather than a payroll convention. What a Direct Earnings Attachment is sets out where each order sits.

A second ordinary creditor cannot simply join in

They have to apply for a conjoined arrestment order, which the sheriff clerk administers. Whether you can have more than one arrestment covers how that works.

Ask a free adviser to check the deduction and the balance

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What is the extra pound on your payslip?

The employer’s administration charge. Your employer may take £1.00 per deduction, and it comes out of your pay on top of the arrested amount rather than out of it.

Where it goes

It goes to your employer for operating the arrestment. It does not reduce your debt and the creditor never sees it.

It is charged per deduction, so a weekly payroll carries it more often than a monthly one. In a period with no deduction there is nothing to charge it against.

Keep it separate when you check your figures

Compare the arrested sum against the table, and treat the pound as a separate line. How much can be taken from your wages sets out the bands.

Why is the balance bigger than the bill you remember?

Because a debt that reaches enforcement picks up additions along the way. For council tax that starts with a 10% statutory addition applied by the council on grant of the summary warrant.

The 10% is not a sheriff officer charge

It attaches when the summary warrant is granted, before any firm is instructed, and the same addition applies to non-domestic rates. How much the 10% is sets out how it is worked out.

Fees are a separate layer on top

Section 93(1) of the 1987 Act makes the expenses of the charge and of serving the earnings arrestment schedule recoverable by that diligence rather than by any other legal process. Whether sheriff officer fees are added to your balance explains the mechanism.

That page also carries what changes on 25 September 2026, when a new Act of Sederunt replaces the current table of fees. Whether the arrestment tables change every April date stamps every other figure in this area.

Ask for the breakdown in writing

  • The original sum and the account or period it relates to.
  • Any statutory addition, and the date it went on.
  • Each fee, the step it relates to, and the date it was charged.
  • Every deduction credited, and the date it was credited.

Keep your payslips and compare them against what the creditor says has been received. If a deduction you can see on a payslip is not credited, ask for it to be accounted for.

Has the wrong figure or the wrong table been used?

It is possible, and it is worth ruling out. Applying the wrong table for a pay frequency, or working from a gross figure, would each produce the wrong answer.

What to put to payroll, in writing

Set out the net figure you have, the table you have applied and the deduction you calculate should have been taken. Ask them for the net earnings figure they used and the band they applied.

Your employer is obliged to operate the arrestment, and refusing makes them liable for the sums they should have deducted. Our wage arrestment calculator runs your own figure so you can compare.

If payroll will not move

Section 50 of the 1987 Act allows an application to the sheriff for a declarator that an arrestment is invalid or has ceased to have effect, and for a determination of a dispute about how it is operating. The Scottish courts publish the rules.

Applying the wrong table, or deducting from a gross figure, is a dispute about operation. There is no time limit on either application.

Can a sheriff reduce the deduction because you cannot afford it?

No. The amount is set by the tables, and a sheriff cannot reduce a Schedule 2 deduction on the ground that the debtor cannot afford it.

Sections 73Q and 73R of the 1987 Act reach funds and moveable property rather than wages, which the unduly harsh application sets out in full.

Section 50 has no affordability ground

Section 50 covers validity and disputes about operation. Neither limb asks what you can afford, and neither can lower the figure the table produces.

Asking a creditor to recall an arrestment in favour of an arrangement is a request rather than a right. A statutory route gives you a footing instead of relying on goodwill.

What actually changes the amount coming off?

Changing the situation rather than the sum. A Debt Payment Programme, sequestration and a protected trust deed each end an earnings arrestment by operation of law.

Other routes to raise with an adviser

  • An approved Debt Payment Programme under the Debt Arrangement Scheme, which stops an existing earnings arrestment and freezes interest, fees and charges.
  • A statutory moratorium, giving six months of protection from diligence, one per rolling 12 months.
  • A time to pay order, where the debt outstanding is £25,000 or less excluding interest. If the sheriff grants one, the sheriff must recall any existing earnings arrestment, though it is not settled whether an earnings arrestment on its own opens the door to an application, so ask a money adviser or the sheriff clerk whether one is competent on your facts.
  • Sequestration, the Minimal Asset Process or a protected trust deed, each of which ends an existing arrestment by statute.

Money already taken is credited against the debt and is not usually refunded, so check the position with the creditor. Whether an arrestment can be stopped once it has started compares the routes.

Where to get it looked at

Free advice is available from Citizens Advice Scotland, StepChange, Money Advice Scotland and National Debtline. The Accountant in Bankruptcy publishes guidance on each statutory solution, and general guidance sits on mygov.scot.

Where the debt is council tax, our council tax debt advice page covers what to put in an offer to a council.

Does Overtime Increase Your Wage Arrestment Deduction?

Why overtime and bonuses lift the deduction for that period only, what the extra hours cost, and whether refusing them helps.

Read the guide

Can A Wage Arrestment Take More Than Half Your Wages?

Why the top band never takes half your pay, what two deductions together can reach, and what to do if you are left short.

Read the guide

What Counts As Net Earnings For A Wage Arrestment?

The closed statutory list behind net earnings, what counts as earnings at all, and the money an arrestment cannot reach.

Read the guide

Is A Wage Arrestment Taken Before Or After Tax?

Why the tables apply to net pay, the four deductions that come off first, and where pension contributions fit into the sum.

Read the guide

Are Sheriff Officer Fees Added To Your Wage Arrestment Balance?

How charge and service expenses join your balance, who sets sheriff officer fees, and what changes on 25 September 2026.

Read the guide

Do The Wage Arrestment Tables Change Every April?

The 6 April 2025 figures still doing the work, why no uprating followed in 2026, and how to check the right table was used.

Read the guide

What Happens To A Wage Arrestment If You Earn Below The Threshold?

Why a nil deduction is not the end of an arrestment, what a run of low periods does to your debt, and what genuinely ends it.

Read the guide

Can You Have More Than One Wage Arrestment At The Same Time?

Only one arrestment can run against a job. What a second creditor must do instead, and which deductions can run alongside.

Read the guide

What Is A Direct Earnings Attachment And How Is It Different?

The DWP deduction that needs no court order, how the rates differ from an arrestment, and what happens when both hit one payslip.

Read the guide

Can A Wage Arrestment Be Stopped Once It Has Started?

Which routes lift an arrestment that is already deducting, from which payday each takes effect, and what happens to money already taken.

Read the guide

Frequently asked questions

Is my wage arrestment taking too much if it is more than a quarter of my pay?

Not necessarily. The Scottish tables have no percentage cap, and the top band takes 50% of net earnings above £3,750.00 a month, so check the figure against the band before assuming an error.

Why did the deduction change from one month to the next?

It is worked out again every pay period on that period’s net earnings. Overtime, a bonus, a change in hours or a different number of working days all move you within the bands.

How do I report a wrong wage arrestment amount?

Raise it with payroll in writing, setting out your net pay, the table you applied and the figure you calculate. If that does not resolve it, a section 50 application can determine a dispute about how the arrestment is being operated.

Can two wage arrestments run at the same time?

Only one diligence against earnings can operate against the same employment at a time, so a second ordinary creditor has to apply for a conjoined arrestment order. A current maintenance arrestment can run alongside an earnings arrestment.

Why is the balance higher than my original council tax bill?

A 10% statutory addition goes on when the summary warrant is granted, applied by the council rather than by any sheriff officer. Sheriff officer fees are then recoverable through the diligence under section 93(1).

Does the £1 charge reduce what I owe?

No. It goes to your employer for operating the arrestment and comes out of your pay on top of the arrested amount.

Can I ask a sheriff to lower the deduction because I cannot afford it?

No. There is no affordability or hardship ground against an earnings arrestment, and the unduly harsh route in sections 73Q and 73R reaches funds and moveable property rather than wages.

Will overtime always increase the deduction?

It will, unless the period still falls in the nil band or in the flat part of the first band. Above the threshold each band charges a fixed cash amount plus a percentage of the excess, so more net earnings in a period generally produce a larger deduction whether or not you cross into a higher band, the exception being monthly net earnings between £750.00 and about £816.67, where the first band’s £10.00 minimum applies whatever the excess.

Get free, confidential help with your wage arrestment today

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Written as general information about Scottish debt law rather than regulated financial or legal advice, and your own circumstances may change the answer. Free, impartial help is available from Citizens Advice Scotland, StepChange, Money Advice Scotland and National Debtline.

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