Stamp duty question when staircasing, Shared Ownership

Mido_2025

Hi All, thank you for this helpful thread and sorry to jump into this.

Can someone please help me to understand what I should pay for my staircasing:

2018 - Property value was £650,000; we bought 40% for £260,000. Stamp Duty was £3000, NPV was £1772
2021 - Property value was £625,000, Staircased to 70 % for £187500 on the additional 30%. No Stamp duty paid.
2025 - Property value is £625,000, we are looking for staircasing to 100% but cannot calculate the correct amount for the remaining stamp duty.

Can anyone help with this please?

SDLT_Geek

Mido_2025 said:

Hi All, thank you for this helpful thread and sorry to jump into this.

Can someone please help me to understand what I should pay for my staircasing:

2018 - Property value was £650,000; we bought 40% for £260,000. Stamp Duty was £3000, NPV was £1772
2021 - Property value was £625,000, Staircased to 70 % for £187500 on the additional 30%. No Stamp duty paid.
2025 - Property value is £625,000, we are looking for staircasing to 100% but cannot calculate the correct amount for the remaining stamp duty.

Can anyone help with this please?

Assuming that in 2018 you bought a property in England from the social provider, then I make the SDLT due on staircasing out £6,422.

This is the calculation.

Add up the payments made: £260,000 + £187,500 + £187,500 is £635,000.

Work out SDLT at today's rates on £635,000.  I used the calculator for that, it gives £21,750.

The SDLT is a fraction of the £21,750.

The fraction is £187,500 / £635,000.

That gives SDLT of £6,422.