se-social-contributions

Section 1 -- Quick reference

Quick reference

Field	Value
Country	Sweden (Kingdom of Sweden)
Authority	Skatteverket (Swedish Tax Agency)
Primary legislation	Socialavgiftslagen (2000:980) -- SAL
Supporting legislation	Inkomstskattelagen (1999:1229); Skatteförfarandelagen (2011:1244)
Total egenavgifter rate	28.97%
Effective rate after deduction	~22.47%
Age 67+ rate (born 1938-1957)	10.21% (ålderspensionsavgift only)
Age 88+ (born before 1938)	0%
First 5 years reduction	~21.47% (on first SEK 200,000)
Upper cap	None
F-skatt payment	Monthly (12th of each month)
Annual declaration	By 2 May
Currency	SEK only
Contributor	Open Accountants
Validated by	Pending -- requires validation by Swedish auktoriserad revisor
Validation date	Pending

Section 2 -- Required inputs and refusal catalogue

• Required inputs — Before computing, you MUST obtain: 1. Business form -- enskild firma, handelsbolag partner, or kommanditbolag? 2. F-skatt registration -- confirmed? 3. Överskott av näringsverksamhet -- net business income 4. Age/birth year -- reduced rates for 67+ 5. Any concurrent employment? -- separate egenavgifter 6. Business year -- first 5 years? (reduction available)
• F-skatt status unknown — If F-skatt status is unknown, STOP.
• R-SE-SOC-1 -- Cross-border worker — Trigger: client works in Sweden and Denmark/other EU state. Message: "EU Regulation 883/2004 applies. A1 certificate required. Escalate."
• Prohibitions — NEVER forget the circular deduction (effective rate ~22.47%, not 28.97%); NEVER apply full rate to persons born 1938-1957 -- only 10.21%; NEVER state there is a cap -- there is no upper limit; NEVER apply egenavgifter to capital income -- only näringsverksamhet; NEVER ignore the first-5-years reduction; NEVER confuse egenavgifter (28.97%) with arbetsgivaravgifter (31.42%); NEVER present F-skatt as only income tax -- it includes egenavgifter

Section 3 -- Rate components (2025)

Rate components (2025) (SAL 3 kap.)

Component	Rate
Ålderspensionsavgift (old-age pension)	10.21%
Efterlevandepensionsavgift (survivors)	0.60%
Sjukförsäkringsavgift (sickness)	3.64%
Föräldraförsäkringsavgift (parental)	2.60%
Arbetsmarknadsavgift (labour market)	0.10%
Arbetsskadeavgift (work injury)	0.20%
Allmän löneavgift (general payroll tax)	11.62%
Total	28.97%

Section 4 -- Age reductions and first-5-years

Age-based reductions

Age category	Effective rate
Born 1958 or later (under ~67)	28.97%
Born 1938-1957 (67-86)	10.21% (only ålderspensionsavgift)
Born before 1938 (88+)	0%

• First 5 years reduction — Sjukförsäkringsavgift reduced by up to 7.5 percentage points on first SEK 200,000 of net business income. Effective rate ~21.47% for qualifying new businesses. Available only once per person. (SAL 3 kap. 18 Section)

Section 5 -- Computation steps

Step 5.1 -- Contribution base and circular deduction

• Contribution base and circular deduction — contribution_base = net_business_income (överskott av näringsverksamhet) Egenavgifter are deductible from income, creating a circular calculation: egenavgifter = net_business_income x rate / (1 + rate) For full rate: effective = 28.97% / 128.97% = ~22.47%.

Step 5.2 -- Apply age reduction

• Apply age reduction — IF born_1938_to_1957: rate = 10.21% ELIF born_before_1938: rate = 0% ELSE: rate = 28.97%

Step 5.3 -- Calculate

• Calculate — egenavgifter = net_business_income x rate / (1 + rate)

Step 5.4 -- F-skatt monthly payments

• F-skatt monthly payments — monthly_F_skatt = (estimated_income_tax + estimated_egenavgifter) / 12

Section 6 -- Payment schedule and tax deductibility

Payment schedule

Payment	Due date
Monthly F-skatt	12th of each month (17th for Feb/Aug)
Annual reconciliation	Inkomstdeklaration by 2 May

Client can request jämkning if income changes significantly.

Tax deductibility

Question	Answer
Are egenavgifter deductible?	YES -- reduce net business income for income tax
When deductible?	In the income year they relate to
Effect	Reduces base for both kommunalskatt and statlig skatt

Section 7 -- Marginal burden context

Marginal burden context

Income level	Kommunalskatt (~32%)	Statlig skatt	Egenavgifter (~22.47%)	Combined
Below ~SEK 614,000	~32%	0%	~22.47%	~47%
Above ~SEK 614,000	~32%	20%	~22.47%	~55%

Kommunalskatt varies by municipality (average ~32%).

Section 8 -- Edge case registry

EC1 -- Aged 68 (born 1957)

Situation: Still running enskild firma. Resolution: Only ålderspensionsavgift (10.21%). Effective ~9.27%.

EC2 -- First year, low income

Situation: Started enskild firma in June, net SEK 80,000. Resolution: First-5-years reduction. Effective ~21.47%.

EC3 -- Handelsbolag partner

Situation: Partner in handelsbolag. Resolution: Same rules as sole proprietor on their share of profit.

EC4 -- Concurrent employment + self-employment

Situation: Employed and runs side enskild firma. Resolution: Full egenavgifter on self-employment income. No offset with employer charges.

EC5 -- Business loss

Situation: Net income SEK -30,000. Resolution: Egenavgifter = SEK 0. Loss carried forward per IL rules.

EC6 -- Passive business income

Situation: Kapitalinkomst from business activity. Resolution: Egenavgifter only on active näringsverksamhet income. Flag for reviewer.

Section 9 -- Reviewer escalation protocol

When a situation requires reviewer judgement:

REVIEWER FLAG Tier: T2 Client: [name] Situation: [description] Issue: [what is ambiguous] Options: [possible treatments] Recommended: [most likely correct treatment and why] Action Required: Qualified auktoriserad revisor must confirm before advising client.

When a situation is outside skill scope:

ESCALATION REQUIRED Tier: T3 Client: [name] Situation: [description] Issue: [outside skill scope] Action Required: Do not advise. Refer to qualified revisor. Document gap.

Section 10 -- Test suite

Test 1 -- Standard sole proprietor

Input: Net income SEK 500,000, age 40, established. Expected output: Egenavgifter = SEK 500,000 x 28.97% / 1.2897 = SEK 112,315.

Test 2 -- Low income

Input: Net income SEK 100,000, age 35. Expected output: SEK 22,463.

Test 3 -- New business, first year

Input: Net income SEK 150,000, age 30, year 1. Expected output: Reduced ~21.47%. SEK 26,505.

Test 4 -- Aged 68

Input: Net income SEK 300,000, age 68. Expected output: Rate 10.21%. SEK 27,792.

Test 5 -- High income

Input: Net income SEK 2,000,000, age 45. Expected output: SEK 449,256. No cap.

Test 6 -- Business loss

Input: Net income SEK -50,000, age 38. Expected output: SEK 0.

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