South Africa Cash Flow Forecast Calculator
Project your business cash flow over the next 12-24 months with growth assumptions.
| Month | Revenue | Costs | Net Flow | Balance |
|---|---|---|---|---|
| Jan | R 250 000,00 | R 180 000,00 | R 70 000,00 | R 170 000,00 |
| Feb | R 255 000,00 | R 181 800,00 | R 73 200,00 | R 243 200,00 |
| Mar | R 260 100,00 | R 183 618,00 | R 76 482,00 | R 319 682,00 |
| Apr | R 265 302,00 | R 185 454,18 | R 79 847,82 | R 399 529,82 |
| May | R 270 608,04 | R 187 308,72 | R 83 299,32 | R 482 829,14 |
| Jun | R 276 020,20 | R 189 181,81 | R 86 838,39 | R 569 667,53 |
| Jul | R 281 540,60 | R 191 073,63 | R 90 466,98 | R 660 134,51 |
| Aug | R 287 171,42 | R 192 984,36 | R 94 187,05 | R 754 321,56 |
| Sep | R 292 914,85 | R 194 914,21 | R 98 000,64 | R 852 322,20 |
| Oct | R 298 773,14 | R 196 863,35 | R 101 909,79 | R 954 231,99 |
| Nov | R 304 748,60 | R 198 831,98 | R 105 916,62 | R 1 060 148,61 |
| Dec | R 310 843,58 | R 200 820,30 | R 110 023,27 | R 1 170 171,89 |
Cash flow is the lifeblood of South African SMEs. Many profitable businesses fail due to cash flow problems.
Factor in payment terms: South African B2B invoices are typically 30-60 days. Your cash inflow may lag your revenue.
Include seasonal variations, especially if your business is affected by holidays or weather patterns.
Maintain a cash reserve of at least 3 months of operating costs as a buffer against load-shedding and economic fluctuations.
Plan ahead to make sure your business always has enough cash to pay its bills
What is a cash flow forecast?
A cash flow forecast predicts how much money will come into and go out of your business over a set period, usually 12 months. It shows when you might run short of cash so you can plan ahead. For example, if you know January is a slow month with only R80,000 in expected sales but R120,000 in expenses, you can arrange an overdraft or cut spending in advance.
Why is cash flow different from profit?
You can be profitable on paper but run out of cash. This happens when customers pay late, you buy stock upfront, or large expenses like tax payments hit at once. In South Africa, many businesses give 30 to 60 day payment terms. If you invoice R200,000 in March but clients only pay in May, you still need cash to cover March and April expenses.
What are the main cash inflows for a South African business?
Cash inflows include customer payments, cash sales, loan drawdowns, investment income, and VAT refunds from SARS. If you export goods, foreign currency receipts converted to Rand are also inflows. Government grants from programmes like the DTI or SEDA can provide additional cash during growth phases.
What are common cash outflows?
Regular outflows include salaries (plus UIF and SDL contributions), rent, raw materials, utilities, insurance, and loan repayments. Tax payments are major outflows — provisional tax is due in August and February, and VAT returns are due every two months. A business with R3 million turnover might pay R450,000 in VAT and R200,000 in provisional tax per year.
How do I handle seasonal fluctuations?
Many South African businesses see spikes around December holidays and dips in January. Retailers might do 30% of annual sales in November-December. Plan by building cash reserves during busy months. Set aside enough to cover 2-3 months of fixed costs. If your monthly costs are R150,000, aim to keep at least R300,000 to R450,000 in reserve.
What impact does load-shedding have on cash flow?
Load-shedding creates unexpected costs and can reduce revenue. Generator diesel can cost R5,000 to R20,000 per month depending on usage. Battery backup systems (UPS) require upfront investment of R30,000 to R150,000. Lost trading hours reduce revenue. Build a contingency of 5-10% of monthly costs into your forecast to cover energy disruptions.
How often should I update my cash flow forecast?
Review your forecast monthly at minimum, comparing actual figures against your predictions. If your business is growing fast or facing challenges, do it weekly. Update the forecast whenever a major change happens — losing a big client, winning a new contract, or an unexpected expense. Many South African banks require an up-to-date cash flow forecast when you apply for business finance.
SARS-Aligned: Based on 2025 SARS rates and thresholds. For personal advice, speak to a qualified tax practitioner.
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Disclaimer: This calculator provides estimates based on current HMRC rates and thresholds for the 2025/26 tax year. It does not constitute professional tax, financial, or legal advice. Your actual liability may differ depending on your individual circumstances. Always consult a qualified accountant or tax adviser before making financial decisions. Read our terms