Two Jobs in Scotland: How Tax Works When You Have Multiple Income Sources

Quick Summary

• Only one job gets your personal allowance — the primary employer uses code S1257L (full allowance); the second uses BR (basic rate, no allowance) or D0/D1 (higher/additional rate)
• Total income determines the rate on the second job — if both jobs combined put you above £43,663, the second job's income is effectively taxed at 42% (Scottish Higher)
• You may over or underpay tax — HMRC adjusts codes annually via Self Assessment or P800, but interim errors are common; check your payslips
• Use our Take-Home Pay Calculator to model your combined take-home from two jobs at Scottish rates

Scotland's six-band income tax system means the stakes in two-job tax are higher than in England. With rates from 19% to 48%, getting the right tax code on your second job can make the difference between overpaying by hundreds or underpaying and facing a surprise bill.

Quick Answer: When you have two jobs (or a job plus self-employment, or employment plus rental income), HMRC allocates your Personal Allowance (£12,570) and basic rate band to one source — usually your main job. All other income is taxed at your marginal rate with no allowance applied. In Scotland, your marginal rate depends on combined income: if both jobs together push your total over £43,663, the marginal rate on the second job is 42% (Higher rate). Over £100,000, the personal allowance taper creates an effective rate of up to 67.5%. Always check your tax codes on your payslips.

How PAYE works with two employers

HMRC's PAYE system assumes each employer sees the full picture of your finances. In reality, each employer only knows about the income they're paying you. This means:

• Job 1 (primary): Gets your full Personal Allowance via tax code S1257L — you pay no tax on the first £12,570 of this income
• Job 2 (secondary): Gets a code that applies your marginal rate from the first pound — typically BR, D0, or D1

The second employer deducts tax as if every pound earned is at your marginal rate, because your personal allowance has already been used on job 1.

Scottish tax codes explained

Tax code	What it means	Effective rate on first £ earned
S1257L	Full Scottish personal allowance	0% on first £12,570
SBR	Scottish Basic Rate — no allowance	20% from first pound
SD0	Scottish Higher Rate — no allowance	42% from first pound
SD1	Scottish Advanced Rate — no allowance	45% from first pound
SD2	Scottish Top Rate — no allowance	48% from first pound

The "S" prefix indicates a Scottish taxpayer. If your second job tax code starts with "BR" (no S prefix) rather than "SBR", your employer may be using UK Basic Rate (20%) rather than the correct Scottish rate — this is usually fine since the first £ of second-job income would be at 20% anyway, but it can cause issues at higher income levels.

Which rate applies to your second job?

The rate on your second job depends on your combined income from all sources. Calculate your annual income from job 1, then see where job 2 income falls in the Scottish bands:

Combined annual income	Scottish band the second job falls into	Tax rate on second job income
Up to £12,570	Personal Allowance	0% (request split allowance from HMRC)
£12,571–£14,876	Starter rate	19%
£14,877–£26,561	Basic rate	20%
£26,562–£43,662	Intermediate rate	21%
£43,663–£75,000	Higher rate	42%
£75,001–£125,140	Advanced rate	45%
Over £125,140	Top rate	48%

Example: Job 1 pays £30,000/year. Job 2 pays £15,000/year. Combined income: £45,000. Job 2's income sits entirely in the Higher rate band (above £43,663 combined). Effective rate on job 2: 42%.

Common two-job scenarios

Scenario 1: Part-time second job, combined income under £43,663

Job 1: £28,000/year (full-time) Job 2: £8,000/year (part-time weekend work) Combined: £36,000

Job 1 uses the S1257L code — full personal allowance. Job 2 uses SBR (20%). But the combined income is in the Intermediate band (21% on income between £26,562–£43,662). The SBR code charges 20% — slightly less than the correct 21%.

At year end, HMRC issues a P800 showing a small underpayment. The employee owes approximately £80 (1% of the £8,000 Intermediate-band income). HMRC collects this through an adjusted code the following year.

Takeaway: Minor underpayments from code mismatches are common and are corrected annually. You don't usually owe a large lump sum.

Scenario 2: Second job pushes you into Higher rate

Job 1: £40,000/year Job 2: £10,000/year Combined: £50,000

Job 1 uses S1257L. Job 2's income starts at £40,000 in the cumulative calculation.

• £40,000–£43,662 is in Intermediate band: 3,662 × 21% = £769
• £43,663–£50,000 is in Higher band: 6,337 × 42% = £2,661
• Total tax on job 2: £3,430 (effective rate ~34% on the £10,000)

Job 2 uses the SD0 code (42%) from the first pound, collecting £4,200. This slightly overcollects — the £769 Intermediate-rate underpayment is a rounding issue. The slight overcollection is refunded via P800 or Self Assessment.

Takeaway: At the Higher rate boundary, expect rough approximations with HMRC adjusting annually.

Scenario 3: Employed + self-employed

If you're employed (job 1) and also run a side business (self-employment), the interaction is slightly different:

• Your employed income uses S1257L
• Self-employment income is assessed via Self Assessment (not through a second PAYE code)
• You pay tax on self-employment profits at your marginal rate after all other income
• You also pay Class 4 National Insurance on self-employment profits (6% on profits between £12,570–£50,270; 2% above)

Example: £35,000 employment + £12,000 self-employment profit. Combined £47,000. Self-employment sits in the Higher rate band (above £43,663). Tax on self-employment profits:

• £35,000–£43,662: Intermediate band, £8,662 × 21% = £1,819
• £43,663–£47,000: Higher band, £3,337 × 42% = £1,401
• Class 4 NI on £12,000: (£12,000 − £12,570 = £0 below threshold, so limited NI) — actually, Class 4 threshold is at £12,570 profits; £12,000 profits = no Class 4 (below threshold)
• Total extra tax on self-employment: approximately £3,220

Register for Self Assessment before 5 October if you start self-employment alongside employment.

Scenario 4: Two employments with income over £100,000

Combined income over £100,000 triggers the Personal Allowance taper — above £100,000, £1 of allowance is lost for every £2 of additional income. At Scotland's Advanced rate (45%), this creates an effective marginal rate of approximately 67.5% in the £100,000–£125,140 zone.

If your combined income from two jobs exceeds £100,000, you must register for Self Assessment — HMRC cannot handle the personal allowance taper through PAYE codes alone at this level. You'll also likely have a tax payment due in January.

Action: If you earn over £100,000 combined, make pension contributions to reduce adjusted net income below £100,000 and restore the full personal allowance.

National Insurance with two jobs

NI is charged separately by each employer — each employer treats your earnings as if they're your only income. This means:

• Each employer applies the NI thresholds independently
• You may effectively pay NI twice on the same band

NI rates 2026/27:

• Employees: 8% on earnings between £12,570 and £50,270; 2% above £50,270

Overpayment of NI: If your combined earnings from two jobs exceed £50,270, you may have overpaid NI (because employer 2 charged 8% up to the threshold without knowing about employer 1's earnings). This is claimed as a refund through Self Assessment.

Example: Job 1: £35,000. Job 2: £20,000. Combined: £55,000.

• Job 1 charges NI on £35,000 − £12,570 = £22,430 at 8% = £1,794
• Job 2 charges NI on £20,000 − £12,570 = £7,430 at 8% = £594
• Total NI paid: £2,388
• Correct NI on £55,000 combined: (£50,270 − £12,570) × 8% = £3,016 + (£55,000 − £50,270) × 2% = £94.60 = £3,110

Actually in this example, NI is underpaid (£2,388 vs £3,110 correct). But for very high combined incomes (where combined income is well above £50,270 and both employers are charging 8% on earnings up to that level), overpayment occurs.

Splitting your personal allowance

If your second income is small and regular, you can ask HMRC to split your Personal Allowance between two employers — each gets a partial allowance rather than one getting all of it and the other getting none.

How to request: Contact HMRC (0300 200 3300) or use your Personal Tax Account at gov.uk. You'll be asked for both employers' PAYE references.

When this makes sense:

• Your second job is roughly equivalent in size to your main job
• You want to equalise the take-home from both jobs
• Your combined income is below the Higher rate threshold

When it doesn't help: If your combined income is in the Higher rate band, splitting the allowance doesn't change the total tax paid — it just changes which cheque it comes from.

Checking if you're on the right code

Your tax code appears on:

• Your payslip (usually top right or in the earnings section)
• Your P60 (annual earnings statement)
• HMRC letters
• Your Personal Tax Account at gov.uk/personal-tax-account

Red flags to investigate:

• Second job coded BR but you're in the Higher rate band (should be SD0)
• Second job coded SBR but your combined income is in the Intermediate band
• Any job coded with an "emergency" code (W1 or M1 suffix) — this is a temporary code that doesn't accumulate

If in doubt, call HMRC on 0300 200 3300 or update through your Personal Tax Account.

When to register for Self Assessment

You need to register for Self Assessment if you have two income sources in any of these situations:

• Self-employment income exceeds £1,000
• Income above £100,000 from any source
• Untaxed income (rental, savings above PSA, dividends above £500)
• Need to claim higher-rate pension relief on RAS pension
• Owe the High Income Child Benefit Charge

Register by 5 October following the tax year in question. For example, for 2025/26 income, register by 5 October 2026.

Frequently Asked Questions

I have two jobs — will I automatically pay the right amount of tax?

Not always. HMRC tries to issue correct codes based on information it has, but codes are not always perfect, especially in the first year of a second job. Check both payslips each month and verify the codes. Small discrepancies are corrected via a P800 at year end.

Can I ask my second employer to use a different tax code?

Employers use the code HMRC tells them to use — they don't have discretion. To change the code, contact HMRC directly. Your employer cannot help.

My second job tax code shows BR — but shouldn't it be SD0 at 42%?

BR is the English Basic Rate code. If you're a Scottish taxpayer, you should have SBR (Scottish Basic Rate, 20%) for income in the lower bands or SD0 (Scottish Higher Rate, 42%) if your combined income is above £43,663. If you're getting BR instead of SD0, your employer may have the wrong Scottish residency flag — contact HMRC.

I'm employed and have rental income. Do I need a second tax code?

No — rental income is assessed through Self Assessment, not PAYE. Your employment code continues as normal. Your rental profit is taxed through your Self Assessment return at your marginal rate.

What if I stop the second job mid-year?

If you stop working a second job before the tax year ends, you may have overpaid tax (PAYE operates cumulatively on each job separately). Request a P45 from your second employer and give it to your main employer. If you've overpaid, HMRC will refund via a P800 after the tax year end, or you can claim it through Self Assessment.

Related Articles

• Scottish Income Tax Rates 2026/27 — the six Scottish bands explained
• Take-Home Pay Scotland: Every Salary — see your net pay at any combined income level
• Scottish Self Assessment Guide — when you need to file a return for multiple income sources
• How to Claim Higher Rate Pension Relief Scotland — claiming 42% pension relief when two jobs push you into Higher band
• Scotland vs England Tax Comparison — how the six-band system changes two-job outcomes

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This article is for informational purposes only and does not constitute financial or tax advice. Tax codes and PAYE calculations are managed by HMRC — contact HMRC directly at 0300 200 3300 or via gov.uk/personal-tax-account for your specific code.

Sources: HMRC — Tax codes, HMRC — Scottish income tax, HMRC — Working for yourself