modbender Crypto Tax Reporting
You have tools to generate crypto tax reports from on-chain XPR Network activity. Supports New Zealand (NZ) and United States (US).
Key Facts
- NZ tax year: April 1 – March 31 (e.g. "2025" = Apr 2024 – Mar 2025)
- US tax year: January 1 – December 31 (calendar year, e.g. "2024" = Jan 2024 – Dec 2024)
- NZ has NO capital gains tax — all crypto gains are taxed as income if you're a regular trader
- US HAS capital gains tax — short-term (<1 year) taxed as ordinary income, long-term at lower rates. Uses 2024 Single filer federal brackets. Does not include state taxes or NIIT.
- Cost basis methods: FIFO (first-in-first-out) or Average Cost
- All tools are read-only — they query APIs and calculate, never transact
- Default region is NZ — pass
region: "US"for US tax reports
Typical Workflow
For a full tax report, the recommended sequence is:
tax_get_balances— opening balances (start of tax year) and closing balances (end of tax year)tax_get_dex_trades— all Metal X DEX trading history for the periodtax_get_transfers— on-chain transfers, auto-categorized (staking rewards, lending, swaps, NFT sales, etc.)tax_get_rates— local currency conversion rates for each tokentax_calculate_gains— compute taxable gains/losses using FIFO or Average Costtax_generate_report— full report with tax brackets and estimated tax
Or use tax_generate_report directly for a one-shot report that orchestrates all steps automatically.
Data Sources (Mainnet Only)
- Saltant API — historical balance snapshots (liquid, staked, lending, yield farm)
- Metal X API — DEX trade history in CSV format (only filled trades)
- Hyperion API — raw on-chain transfer/action history
- CoinGecko API — historical and current crypto prices (set
COINGECKO_API_KEYin .env for full historical access)
Transfer Categories
Transfers are auto-categorized by sender/receiver:
| Category | Detection |
|---|---|
staking_reward |
from eosio or eosio.vpay |
lending_deposit |
to lending.loan |
lending_withdrawal |
from lending.loan |
lending_interest |
from lending.loan with interest memo |
swap_deposit |
to proton.swaps |
swap_withdrawal |
from proton.swaps |
long_stake |
to longstaking (XPR long staking) |
long_unstake |
from longstaking |
loan_stake |
to lock.token or yield.farms (LOAN/SLOAN staking) |
loan_unstake |
from lock.token or yield.farms |
dex_deposit |
to dex or metalx |
dex_withdrawal |
from dex or metalx |
nft_sale |
from atomicmarket |
nft_purchase |
to atomicmarket |
burn |
to eosio.null (token burn = realized loss) |
escrow |
to/from agentescrow |
transfer |
everything else |
Staking Income Rules
- Block producer rewards (
staking_reward): Full amount is income at time of receipt - Long staking (XPR via
longstaking): Only the excess over the staked amount is income. E.g. stake 100 XPR, unstake 150 XPR → income of 50 XPR - LOAN staking (via
lock.token/yield.farms): Same excess-only rule as long staking - Lending interest: Full amount from
lending.loanwith interest memo is income
Stablecoin Handling
XUSDC and XMD are pegged to USD — their local currency value uses forex rates (USD/NZD) directly, without CoinGecko. This is more accurate than market-based pricing for stablecoins.
Rate Sources (Priority Order)
- DEX trades — derives token prices from TOKEN/XMD trade ratios (most accurate, no API limits)
- Forward-fill — gaps between DEX trade dates use nearest prior known rate
- CoinGecko — fallback for dates with no DEX data. Without API key: limited to 365 days. With
COINGECKO_API_KEY: unlimited history - Forex — stablecoins use USD→NZD conversion rate
Delivering the Report
tax_generate_report returns a report_markdown field — a pre-formatted Markdown document with balance sheets, trading summary, income breakdown, tax brackets, and disclaimer. To deliver it:
- Upload
report_markdownviastore_deliverablewithcontent_type: "application/pdf"— this is the primary deliverable - Upload
csv_exports.disposalsviastore_deliverablewithcontent_type: "text/csv"— disposals CSV - Upload
csv_exports.incomeviastore_deliverablewithcontent_type: "text/csv"— income events CSV - Call
xpr_deliver_jobwith ALL URLs comma-separated (PDF first):"https://ipfs.io/ipfs/QmPDF...,https://ipfs.io/ipfs/QmDisposals...,https://ipfs.io/ipfs/QmIncome..."
IMPORTANT: You MUST complete ALL steps (upload + deliver) in a single run. Do NOT stop after uploading the PDF — you must also upload the CSVs and call xpr_deliver_job. The job is not complete until xpr_deliver_job is called.
The frontend displays the primary file (PDF) prominently and lists additional files as download links.
Known Limitations
- Only filled DEX trades are included (not pending orders)
- NFT: only buy/sell supported (not auctions)
- Liquidations on Metal Lending are not supported
- Escrow payments are tracked but not fully categorized
- Historical pricing accuracy depends on DEX trade activity and CoinGecko data availability
Important Notes
- Always include the disclaimer from the report — this is not tax advice
- Suggest users save CSV exports for the IRD 7-year record requirement
- The
regionparameter defaults to"NZ"on all tools — pass a different region code when other regions are added - Set
COINGECKO_API_KEYin .env for best historical pricing (free Demo key removes 365-day limit) - For tokens not on CoinGecko, the tool derives prices from Metal X DEX trade ratios