What information helps estimate taxable income before the year is over?

Define the taxpayer, year and point of review

Begin with a cover sheet identifying the taxpayer, year of assessment, provisional period and date to which the accounting records are complete. These details prevent a sound forecast being used for the wrong entity or period. A company with a different year-end should not simply adopt the dates used for a director's personal return.

Record who prepares the accounting information, who reviews the tax treatment and who authorises submission and payment. If an accountant is using management reports, state which version is final for the calculation. Changes made after that date should be reported rather than left in a separate spreadsheet.

The SARS provisional-tax guide requires estimates for the relevant year and contains rules specific to the period and taxpayer. The information-gathering process below supports that calculation. It is not a substitute for applying the current rules, including any relevant basic-amount, credit or underestimation provisions.

Start with results you can reconcile

Use income and expense records that have been checked against the underlying transactions. Confirm that bank accounts, customer balances, supplier balances and payroll are up to date. An unreconciled management report may contain duplicate receipts, missing invoices or expenses placed in the wrong period, all of which can distort the estimate.

• Income statement and trial balance to the agreed cut-off date.
• Bank and payment-platform reconciliations.
• Customer and supplier balances, with significant overdue items explained.
• Payroll totals and owner transactions needing review.
• Asset purchases, disposals and financing changes during the year.

Keep the actual period separate from the forecast period. If the first eight months are complete, do not present the final four months as if they have already occurred. Give the preparer the date on every report and identify known missing information. A transparent gap can be investigated; a confident-looking total with hidden omissions is harder to correct.

Build the remaining-year forecast from specific assumptions

List expected revenue by the evidence behind it. A signed contract, a recurring customer arrangement and an early sales lead do not offer the same level of certainty. Explain when work is expected to occur and which costs follow from delivering it. Avoid extending an unusually strong month across the whole year without considering the reason for the spike.

Review fixed commitments, staffing plans, supplier costs and seasonal changes. Note contracts that have ended, price changes agreed with customers and planned expenditure that has not yet been committed. The objective is a reasonable view of the remaining period, not the most optimistic business plan.

Identify matters that need a tax adjustment

A forecast of accounting profit is an input to the tax estimate. Ask the preparer which adjustments are needed to arrive at estimated taxable income. Provide the details of significant asset transactions, expenses with private elements, unusual receipts and other matters whose tax treatment is uncertain.

Do not remove an expense from the information pack because you suspect it may be disallowed. Show the accounting figure and let the treatment be reviewed transparently. Equally, do not assume that a purchase immediately creates a full deduction simply because cash has left the account. Record the nature, date and business use of the item.

For an individual, the review may need relevant income and credits beyond one business. Tell the preparer about employment and other sources so the calculation is not built from an isolated business spreadsheet. Keep each taxpayer's information separate. The same owner may need to provide records for a company estimate and a personal estimate, but those calculations should not be blended.

Bring earlier assessments and payment evidence into the review

Provide the earlier assessment information and provisional calculations requested by the preparer. Include submission dates and the actual payments made, with references and account evidence. A payment proposed in an earlier email may not have been executed, and a bank debit may still need its allocation confirmed.

Ask the preparer to explain how earlier amounts are used in the current calculation. Mark the difference between the estimate of full-year taxable income, the calculated tax and the amount now payable. This makes it easier to identify double-counted credits or a prior payment omitted from the working papers.

Keep the calculation version and its supporting reports together. If an assessment changes or an account issue is resolved after the estimate is prepared, flag it before approval. Do not silently replace one supporting document and assume everyone will notice the difference. A short change note can prevent the current return from relying on an outdated input.

Why revise the estimate when profits change?

A provisional estimate uses information available at a point in time. When the business gains a major contract, loses a customer or incurs a significant new cost, the earlier view of the full year may no longer be reasonable. Review the forecast at each relevant submission rather than copying the previous estimate without checking what has changed.

The purpose is accuracy, not simply reducing the next payment. A rise in expected profit may require a different provision for tax and cash. A fall may also need proper evidence and consideration of the applicable estimate rules. An unsupported lower number chosen because the bank balance is small does not explain the business's taxable income.

Record the change in three parts: the event, its expected effect on the remaining year and the evidence supporting that effect. For example, a written cancellation may reduce expected revenue but also remove delivery costs. Adjusting only the lost revenue could overstate the profit reduction. Conversely, new work may bring both revenue and additional staff or materials costs.

Ask the preparer to assess the revised position under the current period's rules, including any underestimation implications. Keep the earlier version so the reason for the change remains visible. This is also useful after year-end, when actual results can be compared with what was reasonably expected at each decision point.

Use scenarios to test uncertainty without pretending it is certainty

Where a major transaction is genuinely uncertain, show a central forecast and a clearly labelled alternative. Explain the event that would move the business from one scenario to the other. This helps the adviser understand the uncertainty; it does not mean choosing whichever scenario produces the lowest payment.

Imagine a contractor expecting an extension to an existing project. The signed work is included in the central record, while the unsigned extension is identified separately with its expected costs and start date. If the extension is agreed before the estimate is finalised, the forecast can be updated using the new evidence. If it remains uncertain, the preparer can consider how the estimate should reflect the facts.

Avoid mixing this income forecast with a cash forecast. Delayed collection can create a cash shortage without changing the underlying revenue in the same way. Keep payment planning alongside the tax calculation so the business can see both the expected obligation and the resources available to meet it.

Prepare a concise approval pack

Before approval, bring together the period cover sheet, reconciled actual results, remaining-year assumptions, tax calculation and payment evidence. Add a short list of unresolved questions and assign responsibility for answering them. The reviewer should be able to trace important figures without searching through unrelated messages.

1. Confirm the taxpayer and reporting period.
2. Check the actual and forecast split.
3. Review significant changes and tax adjustments.
4. Verify earlier amounts used in the calculation.
5. Approve the final version and track submission and payment.

IRP6 preparation support can help turn this pack into a supported estimate. Retain the working papers and update the assumptions when the facts change, so the next review starts from an understandable record rather than a number copied from the previous return.