Comparison of Railway Budget Grants
| Aspect | Railways Internal Circulation | Parliamentary Oversight (C&AG Scrutiny) | 
| Types of Grants | 1. Budget Grant (BG)2. Spending Limit (SL)
 3. Revised Grant (RG)
 4. Final Grant (FG)
 | 1. Original Grant (O)2. Supplementary Grant (S)
 3. Excess Grant
 | 
| Purpose | Internal monitoring and control of Railway expenditure | Parliamentary sanction and post-facto legislative accountability | 
| Authority Concerned | Ministry of Railways, Zonal Railways | Parliament of India | 
| Budgeting Stage | Throughout the financial year | During and after Budget session of Parliament | 
| Documentation | Internal budget circulars, Demand Forecasts, Expenditure Registers | Appropriation Bill, Budget Documents presented to Parliament | 
| Audit/Reconciliation Role | Reviewed internally by Railways | C&AG scrutinizes via Appropriation Accounts | 
| Approval Needed From | Railway Board | Parliament of India | 
Explanation of Each Term
Railways Internal Circulation
BG - Budget Grant: Initial estimate of funds allocated at the start of the financial year.
SL - Spending Limit: The maximum limit up to which the spending can be made under a grant.
RG - Revised Grant: Modified estimate based on mid-year trends and actual expenditure.
FG - Final Grant: Consolidated and actualized allocation after adjustment of estimates and savings.
Parliamentary Classification
O - Original Grant: Sanctioned during the Annual Budget approved by Parliament.
S - Supplementary Grant: Additional funds sought during the year for unanticipated needs.
Excess Grant: Sought after the financial year ends if expenditure exceeds total sanctioned grant.
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