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    National Insurance Calculator UK - Free NI Calculator 2026/27

    Earnings Details

    Enter your earnings to calculate National Insurance contributions

    National Insurance Rates 2026/27

    Employee Rates (Class 1)

    • £0 - £12,570: 0%
    • £12,570 - £50,270: 8%
    • Above £50,270: 2%

    Employer Rates (Class 1)

    • £0 - £5,000: 0%
    • Above £5,000: 15%

    Different Classes of National Insurance

    Class 1 - Employees

    Paid by employees and employers on earnings. Employee pays 8% (then 2%), employer pays 15%. Collected through PAYE.

    Class 2 - Self-Employed (Low Earners)

    For 2026/27, no charge for most people but credits are treated as paid if profits are at least £7,105. Provides State Pension and benefits eligibility.

    Class 4 - Self-Employed (Profits)

    6% on profits £12,570-£50,270, then 2% above. No benefit entitlement, paid via Self Assessment.

    Complete Guide to National Insurance Calculations

    National Insurance is a mandatory contribution that funds the UK's State Pension, NHS, and social security benefits. Understanding how NI is calculated helps you plan your finances effectively and ensures you're not overpaying or underpaying. For a plain-English overview, read our guide to National Insurance for employees and employers. This comprehensive guide explains everything you need to know about National Insurance calculations for the 2026/27 tax year.

    How Employee National Insurance Works

    If you're employed, National Insurance is automatically deducted from your wages through the PAYE (Pay As You Earn) system. Your employer handles all calculations and payments to HMRC, so you don't need to file anything separately. The amount you pay depends on how much you earn. Our guide on how much National Insurance you should pay explains the payslip checks in more detail.

    The key thresholds for 2026/27 are: the Primary Threshold of £12,570 per year (where you start paying NI), and the Upper Earnings Limit of £50,270 (where the rate drops from 8% to 2%). Below the Primary Threshold, you pay nothing but still build up qualifying years for State Pension if you earn above the Lower Earnings Limit of £6,708.

    Step-by-Step Employee NI Calculation Example

    Let's calculate NI for someone earning £45,000 per year:

    Step 1: Calculate earnings above Primary Threshold

    £45,000 - £12,570 = £32,430 (taxable for NI at 8%)

    Step 2: Calculate NI at 8%

    £32,430 × 8% = £2,594.40 per year

    Step 3: Calculate monthly NI

    £2,594.40 ÷ 12 = £216.20 per month

    (Note: Since £45,000 is below the Upper Earnings Limit of £50,270, all taxable earnings are at 8%)

    High Earner NI Calculation Example

    For someone earning £80,000 per year:

    Step 1: Earnings between Primary Threshold and Upper Limit

    £50,270 - £12,570 = £37,700 (taxable at 8%)

    Step 2: NI at 8% on this band

    £37,700 × 8% = £3,016 per year

    Step 3: Earnings above Upper Limit

    £80,000 - £50,270 = £29,730 (taxable at 2%)

    Step 4: NI at 2% on excess

    £29,730 × 2% = £594.60 per year

    Step 5: Total annual NI

    £3,016 + £594.60 = £3,610.60 per year (£300.88 per month)

    Self-Employed National Insurance Explained

    If you're self-employed, you pay National Insurance differently from employees. Instead of having it deducted through PAYE, you pay NI through your annual Self Assessment tax return. Self-employed individuals pay two types of NI: Class 2 and Class 4.

    Class 2 National Insurance (2026/27)

    Class 2 NI is no longer a direct cost for most self-employed people. From 2026/27, if your profits are at least £7,105, you automatically receive Class 2 NI credits without paying anything. These credits count towards your State Pension entitlement. If your profits are below £7,105, you can still pay voluntary Class 2 contributions (£3.65 per week) to build up pension qualifying years.

    Class 4 National Insurance (2026/27)

    Class 4 NI is calculated on your taxable profits from self-employment. For 2026/27, the rates are 6% on profits between £12,570 and £50,270, and 2% on profits above £50,270. Unlike Class 2, Class 4 contributions don't count towards any benefits; they are a separate profit-based charge paid through Self Assessment.

    Self-Employed NI Calculation Example

    For a self-employed person with £55,000 annual profits:

    Class 2: £0 (credits received automatically as profits exceed £7,105)

    Class 4 (6% band): (£50,270 - £12,570) × 6% = £2,262

    Class 4 (2% band): (£55,000 - £50,270) × 2% = £94.60

    Total NI: £2,356.60 per year

    National Insurance for Company Directors

    Company directors have unique NI rules that can significantly affect their tax liability. Directors can choose between two calculation methods, each with different implications for cash flow and tax efficiency.

    Annual Earnings Period Method

    Most directors use this method, which calculates NI across the entire tax year rather than month by month. This is beneficial if you take irregular income—for example, a large bonus in one month and nothing in others. With the annual method, you won't overpay NI and then need to claim a refund.

    Alternative Method (Standard)

    The standard method calculates NI each pay period as for regular employees. This can result in overpaying NI early in the year if you take variable income, though it evens out by year-end. Some directors prefer this for simpler payroll processing.

    Optimal Salary Strategy for Directors

    Many directors pay themselves a salary at or just below the Secondary Threshold (£5,000 in 2026/27) to avoid employer NI, then take the rest as dividends. However, a salary at the Primary Threshold (£12,570) is often better because:

    • It maximises corporation tax relief (salaries are deductible, dividends aren't)
    • It ensures a full qualifying year for State Pension
    • The employee NI cost is only £0 (as you're at the threshold)
    • Employer NI is £1,135.50 per year before any Employment Allowance, but this is corporation tax deductible

    Compare the trade-off using our salary vs dividend calculator or the director salary calculator.

    State Pension and NI: What You Need to Know

    National Insurance contributions directly affect your State Pension entitlement. Understanding the connection helps you plan for retirement and identify if you need to take action to protect your pension.

    Qualifying Years Explained

    A "qualifying year" is a tax year in which you've earned enough or received enough NI credits to count towards your State Pension. For 2026/27, you need annual employment earnings of at least £6,708 (the Lower Earnings Limit) to get a qualifying year. Even if you earn below the Primary Threshold and pay no NI, you still get credits if you're above this limit.

    State Pension Entitlement

    • Full new State Pension: 35 qualifying years = £241.30 per week (2026/27)
    • Minimum entitlement: 10 qualifying years required for any pension
    • Proportional pension: Each qualifying year can add approximately £6.89 per week, subject to your record

    Who Gets NI Credits?

    You may receive National Insurance credits (which count as qualifying years) if you're:

    • Claiming Child Benefit for a child under 12
    • Receiving Jobseeker's Allowance or Employment and Support Allowance
    • Caring for someone for 20+ hours per week (Carer's Credit)
    • On approved training courses
    • Receiving certain working-age benefits like Universal Credit

    Voluntary National Insurance Contributions

    If you have gaps in your National Insurance record, you may be able to pay voluntary contributions to fill them. This can be worthwhile if it increases your State Pension, but you should calculate whether the cost is justified by the extra pension you'll receive.

    Class 3 Voluntary Contributions

    Class 3 contributions are the standard voluntary contributions for most people. The rate for 2026/27 is £18.40 per week (£956.80 for a full year). You can usually fill gaps from the past 6 tax years, though special rules currently allow you to fill gaps back to 2006.

    Is It Worth Paying Voluntary Contributions?

    Cost to buy one year: £956.80

    Extra weekly pension: £6.89

    Extra annual pension: about £358.50

    Break-even point: about 2.7 years of pension

    If you live at least 3 years past State Pension age, you'll get more back than you paid. Given average life expectancy, this is usually worthwhile.

    How to Check Your NI Record

    Before paying voluntary contributions, check your NI record online through your Personal Tax Account at gov.uk. You'll see how many qualifying years you have, any gaps, and whether you're on track for the full State Pension. You can also call the Future Pension Centre on 0800 731 0175 for a pension forecast.

    Tips to Reduce Your National Insurance Bill

    Salary Sacrifice Pension

    Contribute to your pension through salary sacrifice to reduce your NI-able earnings. Both you and your employer save NI, and some employers share their NI savings with you. Read the salary sacrifice guide and use our pension tax relief calculator to compare the pension side.

    Claim Employment Allowance

    If you're an employer, claim up to £10,500 off your employer NI bill. Most businesses qualify unless you're a single-director company.

    Electric Vehicle Salary Sacrifice

    EV salary sacrifice schemes save significant NI as you sacrifice gross salary before NI is calculated. Combined with low BIK rates, this is very tax-efficient.

    Directors: Dividend Strategy

    As a company director, taking a low salary plus dividends avoids NI on dividend income entirely. However, balance this against corporation tax and pension considerations with the salary vs dividend calculator.

    Check for Overpayments

    If you have multiple jobs, you may overpay NI. Contact HMRC for a refund or apply for a deferment if you expect to exceed thresholds across jobs.

    Time Your Income

    If you control when you receive income (freelancers, contractors), consider timing to stay below thresholds or spread income across tax years.

    Common National Insurance Mistakes to Avoid

    Ignoring Gaps in Your NI Record

    Many people don't check their NI record until close to retirement, when it's too late to fill older gaps. Check regularly and fill gaps while you can still pay historical rates.

    Not Claiming Child Benefit

    Even if you earn over £60,000 and must repay Child Benefit through tax, you should still register. The parent claiming gets NI credits, protecting their State Pension. You can register and opt out of payments.

    Paying Too Much as Self-Employed

    Self-employed individuals often overpay NI by not claiming all allowable expenses. Remember that Class 4 NI is based on taxable profits after expenses—the lower your profits, the lower your NI.

    Working Past State Pension Age Without Notifying Employer

    You don't pay NI after State Pension age, but your employer needs to know to stop deducting it. Provide your birth certificate or passport to your employer when you reach State Pension age.

    Frequently Asked Questions

    What are the National Insurance rates for employees in 2026/27?+
    For employees, Class 1 NI is 8% on earnings between £12,570-£50,270 and 2% on earnings above £50,270. There's no NI on the first £12,570 of earnings (the Primary Threshold). For self-employed people, Class 4 NI is 6% on profits between £12,570 and £50,270, then 2% above £50,270.
    Do I pay National Insurance if I'm self-employed?+
    Self-employed individuals usually receive Class 2 NI credits automatically, with no Class 2 charge for 2026/27 if profits are at least £7,105. Class 4 NI is 6% on profits between £12,570-£50,270, then 2% above £50,270. You pay Class 4 through Self Assessment alongside your income tax.
    What does National Insurance pay for?+
    National Insurance contributions count towards state benefits including State Pension, Maternity/Paternity Allowance, Bereavement Support Payment, and contribution-based Employment and Support Allowance. You need sufficient NI years for a full State Pension.
    How much National Insurance do employers pay?+
    Employers pay Class 1 NI at 15% on employee earnings above £5,000 per year (the Secondary Threshold). There's no upper limit. Most employers can claim Employment Allowance of up to £10,500 per year to reduce their NI bill.
    Can I get a refund if I've paid too much National Insurance?+
    Yes. If you've overpaid NI (common if you have multiple jobs or are both employed and self-employed), contact HMRC to claim a refund. You can also check your NI record online through your Personal Tax Account to see if you've overpaid.
    What happens if I have two jobs?+
    Each employer deducts NI separately. If your combined earnings exceed the thresholds, you may overpay NI. You can claim a refund from HMRC. However, if both jobs pay below £12,570, you won't pay any NI in either job.
    Do I pay National Insurance on pension income?+
    No. You don't pay National Insurance on State Pension, workplace pensions, or personal pension income, regardless of age. NI is only payable on employment earnings and self-employed profits. This makes pension income more tax-efficient than salary.
    At what age do I stop paying National Insurance?+
    You stop paying National Insurance when you reach State Pension age (currently 66, rising to 67 by 2028). This applies whether you're employed or self-employed. Your employer should automatically stop deducting NI when you provide proof of your age.
    How do I calculate my National Insurance contributions?+
    Use our free NI calculator above. Enter your annual salary, and we calculate your Class 1 contributions automatically. For £35,000 salary: £0 on first £12,570, then 8% on £22,430 (£35,000 - £12,570) = £1,794.40 per year or £149.53 per month.
    What is the National Insurance threshold 2026/27?+
    The Primary Threshold (where employees start paying NI) is £12,570 per year (£242 per week). The Secondary Threshold (where employers start paying) is £5,000 per year (£96 per week). The Upper Earnings Limit where the rate drops from 8% to 2% is £50,270.
    Do directors pay National Insurance differently?+
    Directors can choose between two methods: Annual Earnings Period (cumulative annual calculation) or Standard NI (monthly like employees). The annual method often results in lower NI if you take irregular income. Most directors use the annual method for tax efficiency.
    How many years of National Insurance do I need for full State Pension?+
    You usually need 35 qualifying years of NI contributions for the full new State Pension (£241.30 per week in 2026/27). You need a minimum of 10 qualifying years to receive any State Pension. Check your NI record at gov.uk to see how many years you have.
    Can I pay voluntary National Insurance contributions?+
    Yes, you can pay Class 3 voluntary contributions (£18.40 per week in 2026/27) to fill gaps in your NI record. This is often worthwhile if you're close to State Pension age and need more qualifying years. Each full year you buy can add about £6.89 per week to your new State Pension, subject to your record.
    Is National Insurance the same as income tax?+
    No, they're separate taxes. Income tax funds general government spending, while National Insurance specifically funds State Pension and benefits. They have different rates, thresholds, and rules. You pay both on employment income, but NI stops at State Pension age while income tax continues.
    Do I pay National Insurance on bonuses?+
    Yes, bonuses are subject to National Insurance at your marginal rate. If you're already above the Upper Earnings Limit (£50,270), you'll pay 2% NI on bonuses. If below, you'll pay 8%. Employers always pay 15% on bonuses with no upper limit.
    What is Employment Allowance and who can claim it?+
    Employment Allowance lets eligible employers reduce their employer NI bill by up to £10,500 per year. Most businesses qualify unless their only employee is a director, or their employer NI was £100,000+ in the previous year. Claim through your payroll software.

    Related Tax Calculators

    NI rarely tells the whole take-home story on its own, so these tools help connect the contribution to your wider pay position. use the income tax calculator for the full PAYE result, use the employer NI calculator if you need the employer-side cost and use the part-year employment calculator when your pay did not run for a full tax year.

    Income Tax
    Calculate PAYE take-home pay
    Self-Employed Tax
    Tax & NI for sole traders
    Employer NIC
    Employer Class 1 NI contributions