Skip to content
Construction & HomecostIndia only

Interior Design Cost Calculator

Interior fit-out cost by package, with the designer fee and GST shown as line items rather than folded into a per-square-foot number. Together they add roughly a quarter to a quoted fit-out, which is where most interior budgets are overrun before any choice is made.

Also called: home interior cost calculator, interior fit out cost.

sqft
Package
%
%
%
Interior cost
₹21,63,614

₹21,63,614 for 1,000 square feet on the comfort package, including ₹2,99,534 of GST and ₹1,38,080 of designer fee. The comfort package is 1250 a square foot, giving 1250000 of base fit-out before wardrobes and ceiling. Package definitions differ between firms, so two quotes at the same rate can cover materially different work. The designer fee of 138080 and GST of 299534.4 add 29% to the 1526000 of works. That is where interior budgets overrun before a single material is chosen. Fixed work of 1526000 stays with the property; the 200000 of loose furniture moves with you. Rates vary by city, season and contractor. Treat the figure as a budget with a stated contingency, not a quotation.

Base fit-out
₹12,50,000
Wardrobes
₹2,40,000
False ceiling
₹36,000
Designer fee
₹1,38,080
GST
₹2,99,534
Cost a square foot
₹2,164
Fixed work, excluding loose furniture
₹15,26,000
On the package
The comfort package is 1250 a square foot, giving 1250000 of base fit-out before wardrobes and ceiling. Package definitions differ between firms, so two quotes at the same rate can cover materially different work.
On fees and tax
The designer fee of 138080 and GST of 299534.4 add 29% to the 1526000 of works. That is where interior budgets overrun before a single material is chosen. Fixed work of 1526000 stays with the property; the 200000 of loose furniture moves with you. Rates vary by city, season and contractor. Treat the figure as a budget with a stated contingency, not a quotation.

Where it goes

Total₹21.6 lakh
Base fit-out ₹12,50,000 (58%)Wardrobes ₹2,40,000 (11%)Ceiling ₹36,000 (2%)Furniture ₹2,00,000 (9%)Fee ₹1,38,080 (6%)GST ₹2,99,534 (14%)

The estimate

ItemAmountA square foot
Base fit-out₹12,50,000₹1,250
Wardrobes₹2,40,000₹240
False ceiling₹36,000₹36
Loose furniture₹2,00,000₹200
Designer fee₹1,38,080₹138
GST₹2,99,534₹300
Method and background

How this is calculated

Fit-out quotes are usually given per square foot of carpet area for a named package, which bundles modular work, a false ceiling, electrical points and painting. Two things sit outside that number and both are substantial: the designer fee, typically eight to twelve percent of the project, and GST on the works contract at eighteen percent. A quote of a thousand a square foot is therefore around twelve seventy delivered. Separating fixed work from loose furniture matters too, because the fixed half stays with the property and the loose half moves with you, which changes how much either is worth spending.

the works contract carries both the designer fee and GST, which together add roughly a quarter to the quoted fit-out
d
Designer fee
t
Tax

Worked examples

Each of these is asserted on every build. If a change to the engine ever moved one of these answers, the build would fail before the page could print it.

a two bedroom comfort package

Carpet area
1,000 sqft
Package
Comfort, full fit-out
Bedrooms
2
Wardrobe a bedroom
₹1,20,000
False ceiling a square foot
₹90
Share of area with false ceiling
40%
Loose furniture and decor
₹2,00,000
Designer fee
8%
GST on the works contract
18%

Interior cost₹21,63,614

1000 x 1250, two wardrobes, 400 sqft of ceiling

Open this example

the essential package

Carpet area
1,000 sqft
Package
Essential, basics only
Bedrooms
2
Wardrobe a bedroom
₹1,20,000
False ceiling a square foot
₹90
Share of area with false ceiling
40%
Loose furniture and decor
₹2,00,000
Designer fee
8%
GST on the works contract
18%

Interior cost₹15,26,414

boundary: the package rate is the largest single lever

Open this example

Method and limits

What it assumes

  • A works contract taxed at the standard rate, which varies by how the contract is structured.

What it deliberately does not model

  • Package definitions differ between firms, so two quotes at the same rate may cover different work.
  • Custom joinery and imported materials can exceed any package rate substantially.

Formula version 1.0.0 · definition 1.0.0 · India · Report a problem with this calculator

Frequently asked questions

Why is the final bill so much higher than the quote?
Because the designer fee and GST sit outside the per-square-foot rate. Together they add about a quarter, so a thousand a foot is closer to twelve seventy delivered.
Should I spend more on fixed work or furniture?
Fixed work stays with the property and loose furniture moves with you. If you may move within a few years that argues for spending less on joinery and more on things you can take.