You don't have to live in a tiny village
The postcodes with the absolute lowest tax rates in Switzerland tend to be small. But if you want urban amenities and low taxes, Geneva is an excellent starting point. 1212 Grand-Lancy has nearly 35,000 residents and a 7.0% tax rate for a single person earning 80k. 1227 Carouge GE is practically identical. 1213 Onex also hits that 7.0% mark with over 20,000 residents.
These numbers look great on paper, but there's a catch. PLZHub estimates these rates at the postcode level. They are fantastic signals for building a shortlist, but you shouldn't treat them as a hyper-precise ranking.
Source and credit: Wikimedia Commons, General Map of Switzerland.jpg, by swisstopo.
Cleaner numbers in Basel-Landschaft
If you prefer postcodes where the tax rate maps directly to the municipality without any estimation, you should look at Basel-Landschaft. 4153 Reinach BL has about 20,000 residents and a direct 7.7% rate. 4123 Allschwil is very similar: 22,000 people and 7.8%.
These aren't quite as low as the Geneva examples, but the numbers are much cleaner to interpret. That distinction matters. A direct 7.8% is often more useful for making a final decision than an estimated 7.0%.
Source and credit: Wikimedia Commons, Swiss mailbox die Post.jpg, by Toni_V.
How to compare them fairly
When you're looking at these pages, pay attention to the tax.isEstimate flag. Without it, you might end up comparing estimated Geneva rates with direct Basel-Landschaft rates as if they are exactly the same type of data.
Use treating the Geneva postcodes as strong low-tax signals, and the Basel-Landschaft ones as clean, reliable baselines. Both are useful, just for different stages of your search.
PLZHub is great for finding where population size and low taxes overlap, but it won't make the final decision for you. Once you have a shortlist of postcodes, verify the actual tax rates directly with the municipality or the cantonal tax office before you pack your boxes.
