RA bill calculators for contractors
Seven calculators for the lines between gross value and net payable, and for what a slow bill costs you. Every rate is an input, set to the example contract's figure.
- Calculators
- 7
- Rates
- Set per contract
- Last checked
- 10 November 2026
Seven calculators for one bill
- Retention money calculator
Every RA bill with a retention or security deposit clause
- GST TDS calculator
Bills to government departments, local authorities and notified bodies
- Labour welfare cess calculator
Building and other construction work covered by the BOCW Acts
- Income-tax TDS calculator
Payments to contractors on works contracts
- Price variation calculator
Contracts with an index-linked price variation clause
- MSME delayed payment interest calculator
Udyam-registered micro and small contractors
- Working capital calculator
Any contractor billing monthly against work done
- Value of work done, this bill20,84,879
- Retention, 5%- 1,04,244
- Mobilisation advance recovery- 1,50,000
- Interest on advance- 12,375
- Secured advance adjusted- 2,40,000
- Labour welfare cess, 1%- 20,849
- Income-tax TDS, 2%- 41,698
- GST TDS, 2%- 41,698
- GST on the invoice, 18%+ 3,75,278
- Recoveries, 7 lines- 6,10,864
- Net payable₹18,49,293
Are the rates in the calculators current law?
No rate is fixed. Every rate is an input, set by default to the example contract's figure. Use the rate in your contract and the current notification.
When were the rules last checked?
On 10 November 2026. Each calculator states the rule it applies and the Act or contract term it comes from.
Do my inputs leave the browser?
No. The calculators run in your browser and nothing you type is sent to us or to analytics.
Is this tax advice?
No. The calculators do the arithmetic. Confirm rates and the base for each deduction with your contract and your tax adviser.