Nicaragua Income Tax

Nicaragua Income Tax -- Rentas del Trabajo Skill v0.1

DISAMBIGUATION: "NI" in this skill means NICARAGUA, the Central American republic. It does NOT mean Northern Ireland or UK National Insurance. There is no HMRC, no pound sterling, and no UK content anywhere in this skill. Currency is the córdoba (C$ / NIO). The tax authority is the DGI (Dirección General de Ingresos). Social security is administered by INSS (Instituto Nicaragüense de Seguridad Social).

Section 1 -- Quick Reference

Section 1 -- Quick Reference

Field	Value
Country	Nicaragua (República de Nicaragua)
Tax	Impuesto sobre la Renta (IR) — rentas del trabajo (employment income)
Currency	Córdoba (C$ / NIO) only
Tax year	Calendar year (1 January -- 31 December); other 12-month periods only by DGI authorization
Primary legislation	Ley No. 822, Ley de Concertación Tributaria (LCT)
Supporting legislation	Ley No. 891 (reform to the LCT); LCT Art. 23 (progressive scale); LCT Art. 19–22 (rentas del trabajo, deductions)
Tax authority	DGI — Dirección General de Ingresos
Social security	INSS — Instituto Nicaragüense de Seguridad Social
Training levy	INATEC (2%, employer-paid only)
Monthly withholding form	IR-122 (employer withholds and remits monthly)
Annual individual return	IR-106 (due within 90 days after year-end, ~31 March)
Validated by	Pending — requires sign-off by a Nicaraguan licensed accountant (Contador Público Autorizado, CCPN)
Validation date	Pending
Skill version	0.1

Progressive Annual Scale — Rentas del Trabajo (2025)

Progressive Annual Scale — Rentas del Trabajo (2025) (LCT (Ley 822) Art. 23, as reformed by Ley 891)

Annual taxable income (C$)	Base tax (C$)	% on excess over lower bound	Lower bound (C$)
0.01 -- 100,000.00	0.00	0% (exempt)	0.00
100,000.01 -- 200,000.00	0.00	15%	100,000.00
200,000.01 -- 350,000.00	15,000.00	20%	200,000.00
350,000.01 -- 500,000.00	45,000.00	25%	350,000.00
500,000.01 and above	82,500.00	30%	500,000.00

• Base-tax column reconciliation — At C$200,000.00 → 15% × (200,000.00 − 100,000.00) = C$15,000.00. At C$350,000.00 → 15,000.00 + 20% × (350,000.00 − 200,000.00) = 15,000.00 + 30,000.00 = C$45,000.00. At C$500,000.00 → 45,000.00 + 25% × (500,000.00 − 350,000.00) = 45,000.00 + 37,500.00 = C$82,500.00. Each base-tax figure equals the cumulative tax at the top of the band below it. The column is internally consistent. (LCT (Ley 822) Art. 23, as reformed by Ley 891)
• Exempt threshold — C$100,000.00 per year (≈ C$8,333.33 per month) is exempt. IR withholding applies only to taxable income above this amount. (LCT (Ley 822) Art. 23, as reformed by Ley 891)
• Tax formula for taxable income T (C$) — IR_annual = base_tax(band) + rate(band) × (T − lower_bound(band)) (LCT (Ley 822) Art. 23, as reformed by Ley 891)

Non-Residents

• Non-resident taxation — Non-residents are taxed by 20% definitive withholding (retención definitiva) on Nicaraguan-source income — a flat rate, NOT the progressive scale. This is final; no annual return reconciliation applies for the withheld amount. [RESEARCH GAP: confirm any treaty overrides for specific counterparties before applying.]

INSS and INATEC Rates (2025)

INSS and INATEC Rates (2025)

Contribution	Payer	Rate	Base
INSS laboral (régimen Integral)	Employee	7.00%	Whole gross salary, no upper cap
INSS patronal — employers with ≤50 employees	Employer	21.50%	Whole gross salary, no cap
INSS patronal — employers with >50 employees	Employer	22.50%	Whole gross salary, no cap
INATEC (training levy)	Employer	2.00%	Gross salary (on top of INSS)

• Salary ceiling eliminated — The maximum insurable-earnings ceiling was removed by INSS Resolution RI-112-2018. Contributions are calculated on the entire gross salary with NO upper cap. The employee rate rose from 6.25% to 7.00% effective 15 Feb 2019. Do NOT use the stale ceiling of C$130,362.60/month or the pre-2019 6.25% rate — they are outdated. (INSS Resolution RI-112-2018)

Order of Computation (critical)

• Order of computation — IR on employment income is computed on income net of the employee's 7% INSS laboral. INSS laboral is a deduction from gross before the progressive scale is applied.
• Order of computation formula — Annual taxable income = Annual gross salary − Annual INSS laboral (7% of gross) Annual IR = scale applied to annual taxable income

[RESEARCH GAP: confirm the exact ordering and any further allowable deductions against LCT Art. 19–23 / DGI guidance before signing off a return.]

Conservative Defaults

Conservative Defaults

Ambiguity	Default
Residence status unknown	STOP — do not pick progressive vs 20% definitive WHT without residence
Currency not stated	Assume córdoba (C$ / NIO); do not assume USD
Income source (employment vs business)	Treat as rentas del trabajo only; refuse other income classes
Whether INSS already deducted	Assume gross (INSS not yet deducted); deduct 7% before the scale
Multiple employers in the year	Flag IR-106 annual-return obligation (see Section 5)
Monthly vs annual figures	Confirm; annualize (×12) before applying the annual scale
Any deduction beyond INSS laboral	Not allowed without explicit DGI basis

Section 2 -- Required Inputs and Refusal Catalogue

Required Inputs

• Minimum viable inputs — Minimum viable — annual (or monthly, clearly labelled) gross salary in córdobas, confirmation of residence status (resident vs non-resident), and confirmation that the income is employment income (rentas del trabajo).
• Recommended inputs — Recommended — payslips or a payroll summary (colilla de pago) for the full year, the employer's INSS laboral deduction records, number of employers during the year, and any prior-year IR-106 or DGI assessment.
• Ideal inputs — Ideal — full payroll ledger (nómina), INSS contribution receipts, employer remittance records (IR-122 filings), and confirmation of whether the employee has more than one employer.
• Refusal if minimum missing — Refusal if minimum is missing — SOFT WARN. No salary figure at all = hard stop. Salary without payslips = proceed with reviewer warning: "This IR computation was produced from a stated salary figure alone. The reviewer must verify gross salary, the 7% INSS laboral deduction, residence status, and whether an annual IR-106 return is required (more than one employer)."

Refusal Catalogue

• R-NI-1 — Residence status unknown. "Residence determines whether the progressive rentas-del-trabajo scale or the 20% definitive non-resident withholding applies. This skill cannot compute IR without confirmed residence status. Please confirm before proceeding."
• R-NI-2 — Business / professional income (rentas de actividades económicas). "This skill covers employment income (rentas del trabajo) only. IR on business and professional activity (rentas de actividades económicas) uses a different regime and rates. Escalate to a Nicaraguan licensed accountant (CCPN)."
• R-NI-3 — Capital income (rentas de capital y ganancias de capital). "Income from capital and capital gains is taxed under a separate IR cédula (typically definitive withholding). Out of scope. Escalate to a Nicaraguan licensed accountant."
• R-NI-4 — Non-resident beyond simple WHT. "Non-resident situations involving treaty relief, permanent establishments, or mixed-source income require specialised analysis. This skill applies only the flat 20% definitive WHT to clearly Nicaraguan-source employment income of a non-resident. Escalate otherwise."
• R-NI-5 — Arrears / DGI enforcement. "Client has outstanding IR arrears or is subject to DGI enforcement. Surcharges and interest (recargos) apply. Do not advise. Escalate to a Nicaraguan licensed accountant immediately."
• R-NI-6 — IVA / VAT requested. "This skill covers income tax (IR rentas del trabajo) only. For Nicaragua IVA, use the nicaragua-iva skill."
• R-NI-7 — Payroll / INSS-employer computation requested. "For full payroll processing, INSS patronal, and INATEC employer contributions, use the nicaragua-payroll skill. This skill computes the employee's IR and 7% INSS laboral only."

Section 3 -- Transaction / Payslip Pattern Library

This is the deterministic pre-classifier for payroll and payslip (colilla de pago) lines. When a line matches a pattern below, apply the treatment directly. If none match, fall through to Tier 1 rules in Section 5.

How to read this table. Match by case-insensitive substring on the line label as it appears on the payslip or payroll ledger. If multiple patterns match, use the most specific. All amounts are córdobas (C$).

3.1 Income / Earnings Lines (add to gross)

3.1 Income / Earnings Lines (add to gross)

Pattern	Treatment	Notes
SALARIO, SUELDO, SALARIO BASE, SUELDO BÁSICO	Gross employment income	Add to annual gross
HORAS EXTRA, OVERTIME	Gross employment income	Taxable employment income
COMISIÓN, COMISIONES, BONO, BONIFICACIÓN	Gross employment income	Taxable; part of rentas del trabajo
INCENTIVO, GRATIFICACIÓN	Gross employment income	Taxable unless a specific exemption is documented
AGUINALDO, DÉCIMO TERCER MES (13th-month)	Gross employment income — EXEMPT subject to limit	13th-month pay (aguinaldo) is exempt up to the legal amount. [RESEARCH GAP: confirm exemption ceiling against LCT before excluding.]
VIÁTICOS (genuine business reimbursement)	EXCLUDE	Reimbursed business expense, not income, if genuine and documented
INDEMNIZACIÓN (statutory severance)	EXEMPT subject to limit	Statutory severance exempt up to legal limit. [RESEARCH GAP: confirm ceiling.]

3.2 Deduction Lines (subtract before the IR scale)

3.2 Deduction Lines (subtract before the IR scale)

Pattern	Treatment	Notes
INSS, INSS LABORAL, SEGURO SOCIAL (7%)	DEDUCT before IR scale	7% of gross; reduces taxable income. Deduct from gross to get IR base

3.3 Withholding / Tax Lines (NOT a deduction from the IR base)

3.3 Withholding / Tax Lines (NOT a deduction from the IR base)

Pattern	Treatment	Notes
RETENCIÓN IR, IR RETENIDO, IMPUESTO SOBRE LA RENTA	IR withheld	This is the tax itself — a credit against the annual IR liability, not a deductible expense

3.4 Lines That Are NEITHER Income Nor a Pre-IR Deduction

3.4 Lines That Are NEITHER Income Nor a Pre-IR Deduction

Pattern	Treatment	Notes
INATEC	EXCLUDE (employer cost)	Employer-paid 2% levy; not an employee deduction, not employee income
INSS PATRONAL	EXCLUDE (employer cost)	Employer 21.5%/22.5%; out of scope for employee IR
ANTICIPO, PRÉSTAMO, ADELANTO (salary advance)	EXCLUDE	Advance / loan against salary — not income, not a deduction
EMBARGO, RETENCIÓN JUDICIAL	EXCLUDE from IR base	Court-ordered garnishment; does not reduce taxable income

3.5 Non-Resident Line

3.5 Non-Resident Line

Pattern	Treatment	Notes
Non-resident Nicaraguan-source employment payment	20% definitive WHT	Flat 20% on the gross Nicaraguan-source amount; do NOT apply the progressive scale

Section 4 -- Worked Examples

All amounts in córdobas (C$). Every total reconciles to the cent.

Example 1 -- Monthly salary below the exempt threshold

Input: Resident employee, gross salary C$8,000.00 / month (C$96,000.00 / year).

Reasoning:

• Annual gross = 8,000.00 × 12 = C$96,000.00.
• INSS laboral = 7% × 96,000.00 = C$6,720.00.
• Annual taxable income = 96,000.00 − 6,720.00 = C$89,280.00.
• C$89,280.00 ≤ C$100,000.00 → falls in the 0% exempt band.

Classification: Annual IR = C$0.00. No monthly IR withholding. INSS laboral of C$560.00/month (6,720.00 / 12) is still deducted and remitted.

Example 2 -- Salary in the 15% band

Input: Resident employee, gross salary C$20,000.00 / month (C$240,000.00 / year).

Reasoning:

• Annual gross = 20,000.00 × 12 = C$240,000.00.
• INSS laboral = 7% × 240,000.00 = C$16,800.00.
• Annual taxable income = 240,000.00 − 16,800.00 = C$223,200.00.
• C$223,200.00 falls in the 200,000.01 – 350,000.00 band (base C$15,000.00, 20% on excess over 200,000.00).
• IR = 15,000.00 + 20% × (223,200.00 − 200,000.00) = 15,000.00 + 20% × 23,200.00 = 15,000.00 + 4,640.00 = C$19,640.00.

Classification: Annual IR = C$19,640.00. Monthly withholding ≈ 19,640.00 / 12 = C$1,636.67/month (employer reconciles to the annual figure via IR-122).

Example 3 -- Salary in the 25% band

Input: Resident employee, gross salary C$40,000.00 / month (C$480,000.00 / year).

Reasoning:

• Annual gross = 40,000.00 × 12 = C$480,000.00.
• INSS laboral = 7% × 480,000.00 = C$33,600.00.
• Annual taxable income = 480,000.00 − 33,600.00 = C$446,400.00.
• C$446,400.00 falls in the 350,000.01 – 500,000.00 band (base C$45,000.00, 25% on excess over 350,000.00).
• IR = 45,000.00 + 25% × (446,400.00 − 350,000.00) = 45,000.00 + 25% × 96,400.00 = 45,000.00 + 24,100.00 = C$69,100.00.

Classification: Annual IR = C$69,100.00. Monthly withholding ≈ C$5,758.33/month.

Example 4 -- Salary in the top 30% band

Input: Resident employee, gross salary C$70,000.00 / month (C$840,000.00 / year).

Reasoning:

• Annual gross = 70,000.00 × 12 = C$840,000.00.
• INSS laboral = 7% × 840,000.00 = C$58,800.00.
• Annual taxable income = 840,000.00 − 58,800.00 = C$781,200.00.
• C$781,200.00 falls in the 500,000.01 and above band (base C$82,500.00, 30% on excess over 500,000.00).
• IR = 82,500.00 + 30% × (781,200.00 − 500,000.00) = 82,500.00 + 30% × 281,200.00 = 82,500.00 + 84,360.00 = C$166,860.00.

Classification: Annual IR = C$166,860.00. Monthly withholding ≈ C$13,905.00/month.

Example 5 -- Non-resident definitive withholding

Input: Non-resident, Nicaraguan-source employment payment C$50,000.00.

Reasoning:

• Non-residents are subject to 20% definitive WHT on Nicaraguan-source income — flat, not the progressive scale.
• WHT = 20% × 50,000.00 = C$10,000.00.
• This is definitive; no annual reconciliation on this amount.

Classification: Definitive WHT = C$10,000.00. Net paid = C$40,000.00. [RESEARCH GAP: check treaty before applying.]

Example 6 -- Bracket boundary at exactly C$100,000 taxable

Input: Resident employee, annual taxable income (after INSS) = C$100,000.00 exactly.

Reasoning:

• C$100,000.00 is the top of the 0% exempt band (0.01 – 100,000.00).
• IR = C$0.00. The 15% rate applies only to income strictly above C$100,000.00.

Classification: Annual IR = C$0.00.

Section 5 -- Tier 1 Rules (When Data Is Clear)

5.1 Scope — Rentas del Trabajo Only

• Scope — This skill computes IR on employment income (rentas del trabajo) for resident employees, plus the flat 20% definitive WHT for non-residents. Business income (rentas de actividades económicas) and capital income (rentas de capital) are out of scope (R-NI-2, R-NI-3). (LCT (Ley 822) Art. 19)

5.2 INSS Laboral Is Deducted Before the Scale

• INSS laboral deducted before scale — The employee's 7% INSS laboral is deducted from gross salary to arrive at taxable employment income. Apply the progressive scale to the net-of-INSS figure. INSS laboral is on the whole gross salary with no upper cap (RI-112-2018). [RESEARCH GAP: confirm exact ordering / further deductions against DGI guidance.] (LCT Art. 19–23)

5.3 The Progressive Scale (annual)

• Progressive scale application — IR_annual = base_tax(band) + rate(band) × (taxable_income − lower_bound(band)) The first C$100,000.00 is exempt. The scale is annual; for monthly payroll, annualize (×12) before applying it, or use the C$8,333.33/month exempt equivalent.

5.4 Monthly Withholding (IR-122)

• Monthly withholding via IR-122 — The employer withholds the employee's IR monthly through payroll and remits it on Form IR-122 (monthly withholding income-tax return). Monthly withholding approximates annual IR ÷ 12, reconciled across the year as salary varies.

5.5 Annual Return (IR-106) — When Required

5.5 Annual Return (IR-106) — When Required

Situation	Annual IR-106 return
Single employer, standard withholding, no extra deductions	Not required — withholding is final
Income from more than one employer totaling over C$100,000/year	Required — file IR-106

• IR-106 form details — Form IR-106 is the annual individual income-tax return. It is due within 90 days after year-end (≈ 31 March). Any final payment is due with the return.

5.6 Non-Resident Definitive Withholding

• Non-resident definitive withholding — Non-residents pay 20% definitive WHT on Nicaraguan-source income — flat, final, no progressive scale, no annual reconciliation on the withheld amount.

5.7 Tax Year

• Tax year — Calendar year (1 January – 31 December). Alternative 12-month periods are allowed only with DGI authorization.

5.8 Items Not Deductible Against the IR Base

5.8 Items Not Deductible Against the IR Base

Item	Reason
INATEC (2%)	Employer-paid levy; not an employee deduction
INSS patronal (21.5%/22.5%)	Employer cost; out of scope for employee IR
The IR withholding itself	It is the tax — a credit, not a deduction from the base
Salary advances / loans (anticipos)	Movement of cash, not income or expense
Court garnishments (embargos)	Do not reduce taxable income

Section 6 -- Tier 2 Catalogue (Reviewer Judgement Required)

6.1 Aguinaldo (13th-Month Pay) Exemption

• Aguinaldo exemption — The aguinaldo (décimo tercer mes) is generally exempt up to the legal amount. Flag for reviewer: confirm the exempt ceiling and whether any excess is taxable. [RESEARCH GAP: confirm ceiling against LCT.]

6.2 Statutory Severance (Indemnización)

• Statutory severance exemption — Statutory severance is generally exempt up to a legal limit; amounts above may be taxable. Flag for reviewer: confirm the exempt limit and the nature of the payment.

6.3 Viáticos and Reimbursements

• Viáticos treatment — Genuine, documented business reimbursements (viáticos) are excluded from income. Flag for reviewer: confirm the reimbursement is genuine and documented, not disguised remuneration.

6.4 Multiple Employers — IR-106 Obligation

• Multiple employers IR-106 obligation — If the employee had more than one employer and total income exceeds C$100,000/year, an IR-106 annual return is required to aggregate income and reconcile withholding. Flag for reviewer: confirm number of employers and total income; prepare IR-106 if triggered.

6.5 Residence Determination

• Residence determination — Residence drives progressive scale vs 20% definitive WHT. Flag for reviewer: confirm residence status and any treaty position before finalizing. [RESEARCH GAP: treaty overrides.]

6.6 Mid-Year Joiners / Leavers and Variable Pay

• Mid-year joiners/leavers and variable pay — Part-year employment and variable monthly pay require annualization and reconciliation to the annual scale. Flag for reviewer: confirm the annualization method and year-end reconciliation.

Section 7 -- Working Paper Template

NICARAGUA INCOME TAX -- IR RENTAS DEL TRABAJO WORKING PAPER
Tax Year: 2025                Currency: Córdoba (C$ / NIO)
Client: ___________________________
Residence: Resident / Non-resident
Number of employers in year: ______

A. GROSS EMPLOYMENT INCOME (annual)
  A1. Salario / sueldo base                     ___________
  A2. Horas extra / overtime                    ___________
  A3. Comisiones / bonos / incentivos           ___________
  A4. Aguinaldo (taxable excess only)  [T2]     ___________
  A5. Other taxable employment income           ___________
  A6. TOTAL gross employment income             ___________

B. PRE-IR DEDUCTION
  B1. INSS laboral (7% of A6, no cap)           ___________

C. ANNUAL TAXABLE INCOME (A6 - B1)              ___________

D. IR COMPUTATION (progressive scale, residents)
   Band of C: __________________________
  D1. Base tax for band                         ___________
  D2. Excess over lower bound                    ___________
  D3. Rate on excess (%)                         ___________
  D4. Tax on excess (D2 x D3)                    ___________
  D5. ANNUAL IR (D1 + D4)                        ___________

E. NON-RESIDENT (alternative to D)
  E1. Gross Nicaraguan-source amount             ___________
  E2. 20% definitive WHT (E1 x 20%)              ___________

F. RECONCILIATION
  F1. Annual IR (D5 or E2)                       ___________
  F2. IR already withheld (IR-122, sum)          ___________
  F3. IR due / (refund) with IR-106 (F1 - F2)    ___________

REVIEWER FLAGS:
  [ ] Residence status confirmed?
  [ ] Currency confirmed as córdoba (C$/NIO)?
  [ ] INSS laboral (7%) deducted before the scale?
  [ ] Aguinaldo / severance exemption confirmed? [T2]
  [ ] Viáticos genuinely reimbursements? [T2]
  [ ] More than one employer → IR-106 required?
  [ ] Annual figures (not monthly) used in the scale?
  [ ] IR withholding treated as a credit, not a deduction?

Section 8 -- Payslip / Payroll Reading Guide

Key Nicaraguan Payroll Terms (Spanish → English)

Key Nicaraguan Payroll Terms (Spanish → English)

Term	English	Classification Hint
Salario / Sueldo	Salary	Gross employment income
Salario base / Sueldo básico	Base salary	Gross employment income
Horas extra	Overtime	Gross employment income
Comisión / Bono / Incentivo	Commission / bonus / incentive	Gross employment income
Aguinaldo / Décimo tercer mes	13th-month pay	Exempt up to limit [T2]
Indemnización	Severance	Exempt up to limit [T2]
Viáticos	Travel/expense reimbursement	Exclude if genuine
INSS laboral	Employee social security (7%)	Deduct before IR scale
INSS patronal	Employer social security (21.5/22.5%)	Employer cost — exclude
INATEC	Training levy (2%, employer)	Employer cost — exclude
Retención IR / IR retenido	Income-tax withheld	Credit against annual IR
Anticipo / Préstamo / Adelanto	Salary advance / loan	Exclude
Embargo / Retención judicial	Garnishment	Exclude from IR base
Colilla de pago	Payslip	Source document
Nómina	Payroll ledger	Source document

Forms Reference

Forms Reference

Form	Purpose	Frequency / Deadline
IR-122	Monthly withholding income-tax return (employer withholds and remits)	Monthly
IR-106	Annual individual income-tax return	Within 90 days of year-end (~31 March)

Section 9 -- Onboarding Fallback

If the client provides a salary figure but cannot answer onboarding questions immediately:

1. Classify all payslip/payroll lines using the pattern library (Section 3).
2. Mark all Tier 2 items as "PENDING — reviewer must confirm".
3. Apply conservative defaults (Section 1) — assume gross, deduct 7% INSS, assume córdoba.
4. Generate the working paper (Section 7) with clear flags.
5. Present the following questions to the client:

ONBOARDING QUESTIONS -- NICARAGUA INCOME TAX (IR)
1. Residence status: resident or non-resident of Nicaragua?
2. Is the income employment income (rentas del trabajo), or business/capital income?
3. Is the salary figure monthly or annual, and in córdobas (C$)?
4. Has the 7% INSS laboral already been deducted, or is this gross?
5. How many employers did you have during the year?
6. If more than one employer, what is the combined annual income?
7. Any aguinaldo (13th-month), severance, or viáticos included in the figure?
8. How much IR has already been withheld during the year (IR-122)?

Section 10 -- Reference Material

Key Legislation References

Key Legislation References

Topic	Reference
Income tax — general framework	Ley No. 822, Ley de Concertación Tributaria (LCT)
Reform	Ley No. 891
Rentas del trabajo / deductions	LCT Art. 19–22
Progressive scale	LCT Art. 23
Tax administration / filing	DGI guidance; forms IR-122, IR-106
INSS laboral rate (7%)	INSS reform 2019; Resolution RI-112-2018 (ceiling eliminated)

Sources (cross-verified June 2026)

Sources (cross-verified June 2026)

Source	Coverage	URL
PwC — Taxes on personal income	Progressive scale, non-resident WHT	https://taxsummaries.pwc.com/nicaragua/individual/taxes-on-personal-income
PwC — Other taxes	INSS rates	https://taxsummaries.pwc.com/nicaragua/individual/other-taxes
PwC — Tax administration	IR-122, IR-106, deadlines	https://taxsummaries.pwc.com/nicaragua/individual/tax-administration
Lorente Consultores	Ley 822 reforms, employee tax burden	https://www.lorenteconsultores.com/post/el-trabajador-y-su-carga-impositiva-lo-que-establece-la-ley-822-y-sus-reformas
DGI — "Aprendamos a Tributar"	Official DGI guidance	https://www.dgi.gob.ni/pdfArchivo/22
Mercer	2019 INSS reform detail	https://www.mercer.com/en-us/insights/law-and-policy/nicaragua-revises-social-security-arrangements/
GCH (Servicio Contable Nicaragua)	Current INSS/INATEC rates, no ceiling	https://www.serviciocontablenicaragua.com/la-gestion-de-nomina-en-nicaragua/
INSS official	Social security authority	https://www.inss.gob.ni/

Big Four coverage for Nicaragua individuals is essentially PwC-only on taxsummaries; EY and Deloitte do not maintain a standalone Nicaragua individual page. PwC is corroborated by Nicaraguan professional sources (CCPN — Colegio de Contadores Públicos de Nicaragua, and the firms cited above).

Test Suite

All amounts in córdobas (C$). Each result reconciles to the cent.

Test 1 — Below exempt threshold. Input: Resident, gross C$8,000/month = C$96,000/year. INSS = 6,720.00. Taxable = 89,280.00 (≤ 100,000.00). Expected: Annual IR = C$0.00.

Test 2 — 15% band. Input: Resident, gross C$20,000/month = C$240,000/year. INSS = 16,800.00. Taxable = 223,200.00. Expected: IR = 15,000.00 + 20% × 23,200.00 = C$19,640.00. (Note: taxable C$223,200 sits in the 20% band; the "15% band" label in the input refers to the headline rate the employee first crosses — the computation is correct at 20% on the excess over C$200,000.)

Test 3 — 25% band. Input: Resident, gross C$40,000/month = C$480,000/year. INSS = 33,600.00. Taxable = 446,400.00. Expected: IR = 45,000.00 + 25% × 96,400.00 = C$69,100.00.

Test 4 — 30% top band. Input: Resident, gross C$70,000/month = C$840,000/year. INSS = 58,800.00. Taxable = 781,200.00. Expected: IR = 82,500.00 + 30% × 281,200.00 = C$166,860.00.

Test 5 — Non-resident definitive WHT. Input: Non-resident, Nicaraguan-source payment C$50,000. Expected: 20% × 50,000.00 = C$10,000.00 definitive WHT (no progressive scale).

Test 6 — Exact boundary at C$100,000 taxable. Input: Resident, taxable income exactly C$100,000.00. Expected: IR = C$0.00 (15% applies only above C$100,000.00).

Test 7 — Pure 15%-band check (taxable C$150,000). Input: Resident, taxable income C$150,000.00 (after INSS). Expected: IR = 0.00 + 15% × (150,000.00 − 100,000.00) = C$7,500.00.

PROHIBITIONS

• NEVER treat "NI" as Northern Ireland or UK National Insurance — this is Nicaragua. No HMRC, no £, no UK content.
• NEVER apply the progressive scale to a non-resident — non-residents get flat 20% definitive WHT.
• NEVER apply the scale without first deducting the 7% INSS laboral from gross.
• NEVER apply an INSS ceiling — RI-112-2018 eliminated the cap; INSS is on the whole gross salary.
• NEVER use the pre-2019 6.25% employee INSS rate or the stale C$130,362.60 ceiling.
• NEVER apply the annual scale to a monthly figure without annualizing (×12) first.
• NEVER treat the IR withholding itself as a deduction from the IR base — it is a credit.
• NEVER include employer INSS patronal (21.5%/22.5%) or INATEC (2%) in the employee's IR computation.
• NEVER assume USD — figures are córdobas (C$ / NIO) unless explicitly stated otherwise.
• NEVER present tax calculations as definitive — always label as estimated and pending professional review.

Disclaimer

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