The simple secret to all tax-deductible expenses is keeping excellent records and documenting your business intentions, business purpose, and business-related activities.

The interesting thing about setting up a business trip and planning it for business purposes is that good things happen. You get to make contacts with people you would otherwise never meet.

What happens when you make plans to meet with vendors, suppliers, advisers, consultants, experts, potential customers, or whoever is appropriate to your business? You stop being a tourist. You start meeting the locals. You are invited into homes. You learn more about the country, city or town you are visiting. As a bonus, you might sell your product or service, or open a new market for your company, or your boss's company.