Changelog

Every report is stamped with the version of the calculation engine that produced it — you will find it at the bottom of your report. This page lists what changed in each one.

When a rule changes the version goes up, and a saved report from an earlier version is marked out of date so you can recalculate it against the current rules.

1.30

  • FixedChoosing a tax band instead of entering your income charged a flat rate on everything, over-stating the bill for anyone living off a portfolio. The band’s own income ceiling is spent instead, and any unused personal allowance or starting rate for savings reaches you. ITA 2007 s12
  • FixedWriting an option is itself the disposal, charged in the year of the grant. IBKR closes a whole position with one row, and every grant it discharged was charged in the first grant’s year — moving premium across 5 April. s144 TCGA 1992
  • FixedA spin-off or a return of capital reached the Section 104 pool ahead of every disposal on that holding, whatever the dates. Both apply on their own date now. s122 TCGA 1992
  • FixedIBKR reports a cancelled corporate action as a second, offsetting row, which can land in another statement of the same upload. Only rows within one file were netted, so a retracted split still reached your pool.
  • FixedA loss on a non-reporting offshore fund was deleted rather than relieved, taking the disposal off the report and out of the brought-forward pool. It is an ordinary allowable capital loss. IFM13550
  • FixedA gain on a non-reporting fund reduces the consideration on the disposal, it does not un-make it. The disposal was dropped outright, so it was missing from your disposal count and total proceeds. reg 45 SI 2009/3001
  • FixedThe 2025/26 SA106 moved gains on offshore fund holdings from box 41 to box 56. The guide named box 41 on every year.
  • FixedHow your disposals were matched — same day, thirty day, Section 104 — was summarised across the whole upload rather than the year on the report. The share and option cards count only the year you are filing.
  • AddedVanEck excess reportable income is bundled, covering the complete published history of its UK reporting share classes.

1.29

  • FixedAn option written in one tax year and assigned in a later one charged the premium twice. The year of the grant books no disposal now, and the report names the return to amend. s144 TCGA 1992
  • FixedIBKR tender offers, ratio mergers and spin-offs were only warned about, so the cost stayed behind in shares you no longer held. They carry it across now. s135 TCGA 1992
  • FixedA Treasury Bill is a deeply discounted security, so its profit is savings income, not a capital gain. Pooled as ordinary shares, they left the discount out of your income entirely. SAIM3010
  • FixedA gilt held at IBKR was taxed on disposal instead of being exempt, because the statement names its instruments after the trades that need them. The registry also gained 4 5/8% Treasury Gilt 2032. s115 TCGA 1992
  • FixedTotal Reportable Income counted excess reportable income twice and omitted offshore income gains altogether. Both are corrected, and a non-reporting fund gain has its own card. IFM12146
  • FixedBlock changed its ticker in January 2025 and the engine did not know it, so an upload spanning the change carried two Section 104 pools for one holding. CG51560
  • FixedIBKR states a currency-conversion commission in the account’s base currency. On a non-sterling account it was read as pounds, understating the gain when that currency was sold.

1.28

  • FixedA reorganisation multiplies the holding by its ratio and leaves the cost alone. Adding the broker's reported share delta instead stranded cost in a pool of shares you no longer owned. CG51700
  • FixedOne reorganisation reported by several statements applies once, and in the same way whichever file arrives first.
  • FixedDividend territory follows the withholding jurisdiction the broker states. An ADR was routed by its ISIN, which gives the receipt's country rather than the company's.

1.27

  • FixedA share reorganisation took its ratio from the row that applied it rather than the holding on that date, so the pool came out the wrong size.
  • BrokerMorgan Stanley release reports priced in pounds gave you an empty report. They parse, and an upload that yields no transactions now says which file could not be read.
  • FixedAn assigned option's premium reached the sterling cost basis but not the native-currency one. Both carry it now. CG55545
  • FixedCommission is charged to the side of the trade that paid it, so the pooled cost reconciles.
  • FixedAn exhausted opening balance could turn an ordinary long disposal into a phantom short.

1.26

  • FixedSome real IBKR reports quietly dropped the option premium and the split scale. Both are recovered.
  • AddedWritten option contracts you still have open show up in Portfolio Holdings.