- KashFlow is a truly unique small business bookkeeping, accounting and financial management solution. Itís powerful yet incredibly easy to use. It provides complete accounting for non-accountants. Create manage & track invoices online, create visual reports & more. One look at KashFlow & your visitors will know that this is a powerful solution that will help their business to succeed. Visitors receive a risk free 60 day free trial, after which you will be instantly credited with £25 per signup.