Why would a payment to one supplier reduce your liability to another?
How your balance sheet might look before making the payment
Assets ..................£5,000
Bank...................£11,000
Total assets.........£16,000
Liability to Supplier A...£16,000
Total liabilities.............£16,000
After paying the money in advance
Assets ..................£5,000
Paid in advance....£10,000
Bank.....................£1,000
Total assets.........£16,000
Liability to Supplier A...£16,000
Total liabilities.............£16,000
After you receive the goods
Assets ..................£5,000
Stock..................£10,000
Bank.....................£1,000
Total assets.........£16,000
Liability to Supplier A...£16,000
Total liabilities.............£16,000