The council tax route front-loads its notices, and every one of them goes to you rather than to your employer. The decree route puts its warning in a charge for payment instead.

Here is what warning each route gives, which clock runs from what, and how to check what was actually sent to you.

An earnings arrestment does not take effect unless the creditor gave you a debt advice and information package no earlier than 12 weeks before the schedule was served, under section 47(3).

What section 47(3) actually does

It is a condition on the arrestment taking effect rather than a courtesy. The provision sits in Part III of the Debtors (Scotland) Act 1987, alongside the duty on your employer to deduct.

The package is defined by reference to the Debt Arrangement and Attachment (Scotland) Act 2002, which is also the Act behind the Debt Arrangement Scheme.

The 12-week window runs backwards, not forwards

Every other deadline in the sequence starts on the day a letter is served and runs forwards. This one is measured back from the day the schedule reaches your employer.

So the question is not how long ago you got something. It is whether anything was given to you inside the 12 weeks before service.

What that means for you in practice

Ask the creditor for the date on which a debt advice and information package was provided to you, and ask in writing. A date is a fact the creditor holds and can confirm.

Take the answer to a money adviser rather than acting on it yourself, because whether the condition was met is a legal question. Challenging a wage arrestment you think is wrong sets out the route for a genuine validity point.

The document that creates the deduction is served on your employer rather than on you, under section 47(2). The warning the Act places on the creditor is the section 47(3) package, and that one goes to you.

Who receives what

Only one line in that table goes to your employer, and it is the one that starts the money moving. What an earnings arrestment schedule is covers what it instructs payroll to do.

Why the split matters

Every warning is addressed to you, so a stale address breaks the whole chain while the schedule still reaches payroll perfectly well. How you know if you have a wage arrestment covers finding out from the payslip instead.

That is the structural reason a deduction can appear without anything landing on your doormat.

A reminder notice, then a final notice, then a summary warrant with a 10% statutory surcharge added. Each stage has a short deadline, and missing one moves the account to the next stage.

The sequence, stage by stage

The sequence sits in the Council Tax (Administration and Enforcement) (Scotland) Regulations 1992. Exact day counts vary a little by council policy, so treat these as typical rather than absolute.

The final notice is the stage that changes everything

Once the seven days a final notice usually allows have passed, the right to pay by instalments goes and the whole remaining year’s balance becomes due. What a final notice for council tax is covers that stage on its own.

Getting instalments reinstated after that is at the council’s discretion rather than a right, and it is still worth asking in writing. What a council tax reminder notice is deals with the stage before it.

It is the clearest warning in the system, and it gives 14 days to pay if you are in the UK or 28 days if you are abroad or your whereabouts are not known. It belongs to the ordinary decree route.

What a charge does

It is served by sheriff officers under section 90 of the 1987 Act, and diligence becomes competent once the days expire. What a charge for payment is sets out the document and its purpose.

The deadline is short and it is dated, which makes it the one warning you can act on with certainty. How long you have to respond to a charge for payment goes through the count.

The two-year tail on a charge for payment

A charge stays valid for diligence for two years from the date it was served. What happens after the 14 days expire covers what a creditor can do next.

So a charge served eighteen months ago is still live.

Where a charge does not come into it

For council tax collected under a summary warrant the council can move to an earnings arrestment without first serving a charge for payment. Whether you can get a wage arrestment without going to court covers that route.

Because the warnings are addressed to you and the schedule is addressed to your employer. Anything that stops post reaching you leaves the enforcement chain intact.

Reasons that can explain a warning you never saw

• An address the council or creditor still holds that you have moved on from.
• Arrears from an earlier financial year you had stopped thinking about.
• Joint and several liability, where the bills went to somebody else at the same level.
• A charge for payment served up to two years earlier, with nothing appearing to follow it.
• A period when opening post was not possible.

Council tax liability runs down a hierarchy, and adults at the same level are jointly and severally liable for the whole bill. What makes you liable for council tax sets that out.

What to do if the letters genuinely never reached you

Say so in writing to the council or creditor and ask for copies. A dated written record is worth having whatever happens next.

Do not rely on a phone call for it. Which documents you should receive before a wage arrestment sets out what to ask for and who holds each item.

Five of them run forwards from a letter, one runs backwards from service on your employer, and one is not a period at all. Knowing which you are looking at tells you how much time is left.

The clocks, side by side

The last row is the one worth noting, because the duty in section 47(1) is expressed by pay day rather than as a number of days from service. When a wage arrestment starts after the paperwork arrives works through the dates.

Which clock matters most to you

If you are holding a charge for payment, the 14 days are the live deadline. If the debt is council tax and a warrant already exists, the useful clock is your own payroll cut-off.

It depends which warning is missing. Section 47(3) is written as a condition on the arrestment taking effect, which puts it in a different category from a notice that simply did not arrive.

Validity is a question for a money adviser

Section 50(1) allows an application for a declarator that an arrestment is invalid or has ceased to have effect, and section 50(3) covers a determination of a dispute about how it is operating. Take the dates to a money adviser or to the sheriff clerk before lodging anything.

Neither route carries an affordability ground. A sheriff cannot reduce a Schedule 2 deduction because you cannot afford it.

Affordability is a different question with different answers

Where the problem is that the deduction leaves you short, the answer is a debt solution rather than an argument about the paperwork. Which debt solution is best if you have a wage arrestment compares them by what each does to an arrestment already running.

Get free money advice the same week, because the routes that bite on diligence take time to prepare. Asking the creditor to wait is not one of them.

The first-day checks have their own guide

What to do the day you receive a wage arrestment notice sets those out in order, so this page does not repeat them. The warning-specific step to add is asking the creditor for the date any debt advice and information package was provided.

The statutory routes worth asking about

An approved Debt Payment Programme under the Debt Arrangement Scheme stops an existing earnings arrestment and freezes interest, fees and charges.

A statutory moratorium gives six months of protection and you get one per rolling 12 months. It stops service of a charge for payment, stops new diligence and stops creditor petitions for sequestration.

It does not stop a creditor obtaining a decree, and interest and charges keep accruing throughout.

Sequestration and a protected trust deed each end an existing arrestment on a fixed date, and a Time to Pay Order requires the sheriff to recall one where the debt outstanding is £25,000 or less excluding interest, 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.

Where free help comes from

Citizens Advice Scotland, StepChange, Money Advice Scotland and National Debtline all cover Scottish diligence, and none of them charges. Official guidance sits on mygov.scot and the statutory schemes are run by the Accountant in Bankruptcy.

Money already taken is credited against the debt and is not usually refunded. Check the position with the creditor.