Airtime Reseller Profit: Calculate Margin, Costs and Cash Flow

Airtime-reseller profit is the money left after the supplier cost, payment costs, errors, support and overheads—not the face value sold. There is no universal percentage that every vendor earns. Obtain the actual commercial terms for the product and channel before forecasting income.

Margin and markup use different denominators

Suppose a hypothetical product costs R97 and sells for R100. Gross profit before other costs is R3. Gross margin is R3 ÷ R100 = 3%. Markup is R3 ÷ R97, approximately 3.09%. Neither describes net take-home income.

If variable payment/handling costs are R1, contribution becomes R2 per completed sale. The supplier price and costs in this example are assumptions, not a SIMcloud discount. A large sales total can coexist with a small contribution.

Estimate break-even with actual overheads

If monthly fixed costs allocated to the service are hypothetically R600 and contribution is R2 per sale, break-even is 300 completed sales before additional costs and tax treatment. If contribution falls to R1, the same fixed cost needs 600 sales. Check whether the assumed number of transactions is realistic for the shop.

Use completed transactions and recognised adjustments. Pending orders, customer prepayments and wallet funding are not automatically profit. Keep refunds and disputed items visible rather than hiding them in the next day's turnover.

Float and cash flow

A prepaid supply wallet can tie up working money. The amount needed depends on transaction timing, funding availability and the expected sales pattern. Do not fund a wallet merely to meet an optimistic forecast without knowing the terms and reconciliation process.

Record opening wallet, funding, completed supplier debits, credits/adjustments and closing wallet. Reconcile this separately from customer cash or bank receipts. Supplier value and cash receipts can occur at different times.

A small error can consume many sales' contribution

At hypothetical R2 contribution, an unrecovered R100 error consumes the contribution of 50 correct sales. Confirm numbers and products before submission and check existing references before a retry. A vague “failed” label is insufficient when the supplier outcome is unknown.

Include time spent resolving mistakes in the operational assessment. A product that generates revenue but consistently needs manual recovery can be less useful than the headline margin suggests.

Affiliate commission is a different calculation

SIMcloud's published affiliate terms specify 1% on qualifying airtime, data and bulk SMS turnover from referred businesses, successful completed transactions and a R1,000 payout threshold. Under that example rate, R10,000 of qualifying turnover corresponds to R100 commission before considering other conditions, not an immediate payout.

Do not add affiliate commission to a hypothetical shop margin unless the actual agreements allow both for the same activity. The business-model guide explains the distinction.

A pricing worksheet to complete

• Actual supplier price and permitted selling price/fee.
• Payment and funding costs attributable to the sale.
• Expected completed volume and realistic support effort.
• Refund/error provision supported by actual experience.
• Allocated monthly overhead and working-value requirement.
• Relevant accounting and tax treatment from the business's own records/advice.

Use SARS small-business resources for current record-keeping and tax information. Do not substitute a turnover figure for taxable profit without establishing the applicable treatment.

Vendor income questions

Company terms reviewed 1 November 2026; all resale economics examples are hypothetical.