Free

Provisional Tax (IRP6): Complete Guide

Understand provisional tax requirements, calculate your payments, and file IRP6 returns correctly to avoid penalties.

9 min readUpdated 29 November 2025
Applies to:Provisional taxpayers • Company directors

Provisional tax allows taxpayers to pay their tax liability in advance, spreading payments across the year rather than paying a lump sum at year-end. Companies, trusts, and individuals with income other than employment salary must register and pay provisional tax.

Who Must Pay Provisional Tax

You must register as a provisional taxpayer if you:

  • Are a company or close corporation (mandatory)
  • Are a trust earning income
  • Earn income from sources other than salary (rental, business, investments)
  • Receive income not subject to PAYE withholding

Exemptions

You are NOT required to pay provisional tax if:

  • You earn salary/wages only (covered by PAYE)
  • Your taxable income is below the tax threshold
  • You are a public benefit organisation (PBO)
  • You are a small business corporation with turnover under R1 million (may use turnover tax instead)

Payment Dates

Mark Your Calendar: Missing provisional tax deadlines results in automatic penalties and interest charges.

February Year-End (Most Companies)

PaymentDue DateBased On
1st Provisional (IRP6)31 AugustEstimate for full year
2nd Provisional (IRP6)28/29 FebruaryRefined estimate
3rd Payment (Top-up)30 SeptemberFinal actual taxable income

Other Year-Ends

If your financial year-end is not February:

  • 1st Payment: Within 6 months after year-end
  • 2nd Payment: At year-end
  • 3rd Payment: 7 months after year-end

Calculating Your Payment

Basic Calculation Method

  1. Estimate your taxable income for the year
  2. Apply the applicable tax rate
  3. Subtract any credits (e.g., foreign tax credits)
  4. For the 1st payment: Pay 50% of estimated tax
  5. For the 2nd payment: Pay remaining balance
Company Tax Rate (2025): 27% for most companies. Small Business Corporations may qualify for lower rates.

Estimation Rules

Safe Harbour Rule: To avoid underestimation penalties, your estimate must be at least 80% of your actual taxable income. If you earned R1 million, your estimate must be at least R800,000.

Your estimate should consider:

  • Current year's performance to date
  • Expected contracts or sales
  • Anticipated expenses and deductions
  • Previous year's actual taxable income (as baseline)

Filing the IRP6

Step-by-Step Guide

  1. Log into SARS eFiling

    Go to www.sarsefiling.co.za

  2. Navigate to Returns

    Go to Returns → Provisional Tax → IRP6

  3. Select Tax Period

    Choose the correct year of assessment

  4. Enter Estimated Income

    Fill in estimated taxable income, deductions, and capital gains

  5. Review Calculation

    System calculates tax due. Verify the amount.

  6. Submit Return

    Submit and download acknowledgment

  7. Make Payment

    Pay via eFiling, EFT, or at a bank

Penalties

Underestimation Penalties

If your estimate is less than 80% of actual taxable income:

  • Interest charged on underpaid amount
  • Penalty of 20% of the underestimated tax (in some cases)
  • Additional interest at the prescribed rate

Late Payment Penalties

  • Interest: Charged from due date at prescribed rate (currently ~10.75% p.a.)
  • Penalty: 10% of unpaid tax if more than R50 overdue
  • Additional: 1% per month for continued non-payment

Tips for Compliance

  • Set Calendar Reminders: Mark payment dates 2 weeks in advance
  • Use Conservative Estimates: Better to overestimate slightly than face penalties
  • Keep Management Accounts Updated: Monthly financials help estimate accurately
  • Consider a Provisional Tax Account: Set aside funds monthly for tax payments

Frequently Asked Questions

What if my company has a loss?

You must still file the IRP6, but your taxable income will be zero or negative. No payment is due, but filing is mandatory.

Can I get a refund if I overpaid?

Yes. When you file your annual tax return (IT14), SARS will calculate if you're due a refund. Refunds are processed after assessment.

What's the difference between IRP6 and IT14?

IRP6 is the provisional tax return (estimates, paid during the year). IT14 is the annual income tax return (actual figures, filed after year-end).

Next Steps

Need Help With Tax Compliance?

Get quotes from verified tax practitioners and accountants who can assist with provisional tax calculations, IRP6 filings, and SARS compliance.

  • Verified & B-BBEE compliant providers
  • Free quotes, no obligation
  • Compare multiple providers
  • POPIA compliant process

Free check - about 3 minutes

Can you actually win a government tender right now?

Most bids are rejected on paperwork long before anyone reads the price. Score your business against what organs of state actually verify - CSD, SARS status, B-BBEE, CIPC, CIDB and COIDA - and see exactly which document is standing between you and a valid bid.

Free, and you see your full result immediately. We ask for your name and an email or phone number so we can send you the scorecard.

Stay on top of tax deadlines