As part of your proposal, you don’t just offer a bid, you also discuss payment terms.
It is important to be clear up front about the cost of the project and what form(s) of payment you accept. Make sure to include payment due dates and deadlines for the deposit, final payment, guarantees, royalties, etc. While many invoices state that payment is “due upon receipt of invoice” and/or “within 30 days of receipt,” you can put a specific date.
It is recommended that you also include a disclaimer that states the projected cost is based on information provided by the client and the final amount is subject to change if the client alters the project requirements.
For more information regarding proposals, check out this article.
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