What does Xero allow you to track against estimated expenses to manage your budget?

Xero enables you to track actual expenses against estimated expenses as a means to effectively manage your budget. By comparing the actual expenses incurred with the estimates, businesses can gain insights into their spending patterns and financial performance. This tracking allows for better decision-making and adjustments in financial planning, enabling organizations to stay within their budgeted allocation.

Tracking actual expenses is crucial because it provides a clear picture of financial health, helping to identify variances between what was planned (estimated) and what was actually spent. This visibility is key in managing resources and making necessary adjustments in operations or budgeting strategies. This makes option 'A' the correct choice.

The other options are less relevant for budget management; projected expenses do not give a historical view needed for accurate budgeting, invoiced amounts focus on revenue rather than expenditure, and deleted expenses do not contribute to budgeting insights at all.