The Most Common Mistakes Kiwis Make With Crypto Tax

Cryptocurrency investment is constantly increasing in New Zealand. Every week we meet people who have dived into crypto trading, staking, or NFTs, only to discover that tax is far more complicated than they expected.

Over the years, after filing thousands of crypto tax returns, we have noticed the same mistakes come up again and again. They are costly, stressful, and in most cases completely avoidable.

Here are the biggest ones we see.

Believing Tax Only Applies When You Cash Out

This is the number one trap. People think tax is only due when they convert back to dollars. In reality, every time you dispose of crypto (whether by swapping one token for another, trading into stable coins, buying an NFT, or selling to fiat), you create a taxable event.

We often meet clients who have traded hundreds of times over multiple historical years before ever cashing out. By the time they come to us, the tax bill has snowballed and they are not prepared.

Not Keeping Proper Records

IRD wants full transaction histories, with dates, amounts, and NZD values. Yet many investors assume exchanges will look after the records. When exchanges shut down or CSV files disappear, the stress begins.

Rebuilding years of missing records is possible, but it is painful and risky. Good record-keeping from the start is worth its weight in gold. Better yet, create a system for this.

Putting Everything in One Partner’s Name

Couples often set up all their wallets and exchange accounts under one person, even if both contributed. That means every gain falls on a single tax return, often at the top 39% rate. With the right advice, there are smarter ways to structure ownership that can significantly reduce the overall tax bill.

Forgetting About Staking, Airdrops, and DeFi

It is not just trading that IRD looks at. Staking rewards, liquidity pools, yield farming, and even airdrops can all be taxable. Many investors leave these out, sometimes because they do not see them as “income.” But IRD’s systems are getting more sophisticated every year, and it is only a matter of time before these gaps are uncovered.

Waiting Until IRD Comes Knocking

By far the most stressful mistake is waiting until a letter arrives from IRD. At that point, penalties and interest have already started building.

To put it in perspective: a tax bill due in April 2022 could have racked up tens of thousands in interest alone by September 2025. The sooner you take action, the less damage is done.

Trying to Get Clever With Offshore Structures

From Cook Islands companies to overseas trusts, we have seen every version of the “my mate told me this will save tax” approach. The truth is that New Zealand’s rules for foreign companies and trusts are strict, mistakes are expensive, and offshore structures are under the microscope of IRD. Without the right structuring and advice, these setups can end up costing more than they save.