There is no honest universal figure for starting an online business. A consulting service, digital-product shop and stock-holding retailer have different risks and cash needs. The useful question is not “What is the cheapest possible launch?” but “What must be funded to test demand and deliver responsibly?”
Build the budget in layers
List essential launch costs first: registration or professional advice where needed, domain, website or selling platform, payment setup, core branding, insurance, samples and required equipment. Then add monthly costs such as software, hosting, bookkeeping, storage, subscriptions and communications.
Include the cost of finding customers
A website does not create demand by itself. Budget for the chosen acquisition method: outreach time, content production, partnerships, events, advertising tests or sales tools. Treat the founder’s time as a real constraint even when it is not initially paid in cash.
Model fulfilment and working capital
Product businesses may pay suppliers, freight, duties and packaging before receiving customer revenue. Service businesses may need contractors or software before invoices are paid. Build a month-by-month cash view that reflects when money actually enters and leaves the bank.
Protect the experiment
Keep a contingency for returns, delays, failed advertising tests and unexpected professional costs. Stage spending around evidence: validate the problem, test the offer, prove delivery and then invest in scale. Do not commit the full budget merely because it is available.
Practical checklist
- Separate one-off and recurring costs.
- Include customer acquisition and founder time.
- Model payment timing and working capital.
- Add tax, insurance and professional advice where relevant.
- Keep a named contingency.
- Tie larger spending to validation milestones.
Common mistakes to avoid
Typical omissions include returns, payment fees, packaging, content, maintenance, tax reserves and the months between paying a supplier and receiving cleared customer funds.
Your next step
Create three scenarios—minimum viable test, realistic launch and faster-growth launch—and review the cash position with a qualified accountant before making material commitments.
Official sources to check
Rules and fees may change. Confirm the current position with these primary sources before relying on this general guide: