Buy-to-let stamp duty calculator
Stamp duty at the higher rates for additional homes in England, and Land Transaction Tax higher rates in Wales. Free
Band by band
The higher rates apply when you'll own more than one home at the end of the day of purchase and aren't replacing your main home. In England that's 5% on top of the standard rates; companies buying homes over £500,000 can pay a flat 17%. In Wales the higher LTT rates start from the first pound. If you sell your old main home within 3 years you may be able to reclaim the extra.