Interim Payment Certificate (IPC)

Interim payments occur through out the construction period. The primary mechanism by which the contractor gets paid for the work carried out. This becomes the cash how between the employees at the pre - determined intervals. (monthly)

These payments are determined by the value of work carried out by the contractor during this period. In general this may call monthly valuations. Sometimes the interim valuations can be called stage payments or milestone payments paid at specific times when the contractor achieves the various stages of completion ( eg : substructure, ground floor level, wall & floor, finishes of ground floor, 1st floor )

Works (as billed) for purpose of payments,

1. Measured work including preliminaries.2. The value of variations & extra work.3. Value of nominated subcontractor’s work.4. Fluctuation it any (price escalation)5. Unfixed material & goods on site.6. The retention percentage

Retention money - Deduct 10% of work done from each IPC and the limit of retention is 5% (5% of the contract sum)Retention money is kept to reduce the risk of any defects done by the contractor.

In preparation of monthly certificate the above are to be adjusted accordingly Consultant / Engineer to the contract issue a certificate as per the contract to the contractor. (within the duration – normally 21 days)

Contractor give the bills & supporting documents & to the Consultant / Engineer. Then the Engineer / Consultant should prepare the IPC within 21days.Once the IPC is made employees should pay the contractor within 14days.

SBD 2 – section II 14.5

Interim Payment Certificate No : 04th sep 2011

Project :Client :Contractor :Contractor sum : Rs…………… (excluding VAT)Maximum retension money : Rs…………… Date of commencement …….(5% of the contract sum)Mobilization Advance received : Rs…………… Date of completion …………..

1. Value of work done upto Rs.2. Value of variations Rs.3. Value of extra work Rs.4. Material of site Rs. Add sub total

5. Fluctuations Rs. sub total

Deductions

6. Advance recovery (25% of sub total II) Rs. ( )7. Retention Rs. ( )8. Previous payments Rs. ( )

9. Balance due to the contractor Rs.

Rupees ……………….. is due to the contractor in respect of Interim payment certificate no. ……………

……………………… …………………………Chief Quantity surveyor Principle Architect

Proposed office building for ICBT at Bambalapitiya

The contractor submitted Interim valuation No.6 to the consultant M/s Maheesha Associates. The contract sum is Rs.134,989,554.40 (excl VAT) Advance received Rs. 26,997,910.88The total recommended value of work done up to 20 th august 2011 is Rs. 75,768,157.00Total variation amount is Rs. 16,370,959.22Recommended extra work Rs. 2,934,529.58Material at site is Rs. 3,230,443.26The previous recommended payment Rs. 63,259,140.71This project is entered 2.5% discount for original contract items by the contractor.Assume that you are the project Qs & prepare PC No.6

Interim payment certificate No.6 04 th sep 2011

Project : Proposed office building for ICBT BambalapitiyaClient : ICBT BambalapitiyaContractor : Contract sum : Rs. 134,989,554.40Max. retension money : Rs. 6,749,477.72Mobilization adv. received : Rs. 26,997,910.88

1.Value of work done up to 20th august 2011 Rs. 75,768,157.00 Discount 2.5% Rs. 73,873,953.082. Value of variations Rs. 16,370,959.223. Value of extra work Rs. 2,934,529.584. Material at site (80%) Rs. 2,584,354.61 Can give discount to material at site as well Because it is in original contract Sub total Rs. 95,763,769.49Add (Discount 2.5% of work done)5. Advance recovery Rs.( 23,940,949.12)6. Retention (limit 5% of contract sum) Rs.( 6,749,477.72)7. Previous payment Rs.( 63,259,140.71) Balance due to the contractor Rs. 1,814,228.94

Rupees one million eight hundred and fourteen thousand and two hundred and twenty eight and ninety four cents is due to the contractor in respect of interim payment certificate No.6

……………………….. ………………………Chief Quantity Surveyor Principal Architect

Key Issues in Interim and final valuations

Since the quantities set out in the BOQ ( CTAD/SBD/02) – condition of contact –clause 14.1)

A property develop is getting the instruction from their consultantsM/s Grasshopper Ltd. to release due payment to the contraction M/s Bull Builders Ltd.Initial contract sum is Rs. 25 million (ex. VAT)Construction period – 1 yearAt the 5th month certified value of work done by the Grasshoppers Ltd. is Rs. 13,250,000.00 inclusive of variation and extra work.The previous payment made to the contract M/s Bull builders is Rs. 8,524,500.00Mobilization paid according to the ICTAD condition of contract (ICTAD/SBD/02/section I – 36.1 page 28)Calculate the due sum for the Bull builders with respect of 5th valuation submitted on 1st September 2011.Proposed class room block for ICBT campus Mt.Lavinia assuming consultant project Qs and comment about the due payment as per ICTAD