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Discrepancy between HMRC & TinyTax tax submission
Hello TinyTax,
As the HMRC system is still operational until March we ran a comparison of a Corp Tax submission between TinyTax and HMRC systems. Everything aligned apart from 3 x areas when the final CT600 form is created, please see below:-
1. TAX CALCULATION FIELD (BOXES 330 – 425)
The tax amounts for 2024 & 2025 are calculated correctly in boxes 345 & 395 respectively and align with HMRC system, these amounts show the full calculation amounts due including pence.
However, a discrepancy occurs in box 430 for total Corporation Tax due (the box states this is a total of boxes 345, 360, 375, 395, 410 and 425), however when it’s calculated in box 430 the figure shown is a rounded down figure with no pence. The HMRC system shows the full amount due including pence.
This has a roll-on impact through the remainder of the submission wherever the total tax due is referenced, such as boxes 440 (Corporation Tax chargeable), 475 (Net Corporation Tax liability), 510 (Tax chargeable).
Question: Shouldn’t the Tax due be the actual full amount including pence ?
2. EXPORTER INFORMATION (BOXES 616, 617 & 618)
This field asks if the company export goods and/or services to individuals, enterprises or organisations outside the United Kingdom (UK).
This is a question asked in the HMRC system but not on TinyTax. We advised on HMRC system we did not export any goods or services and box 618 (No – neither) was marked with a ‘X’.
Obviously as there is no such question in Tiny Tax system so all 3 boxes are blank.
Question: Does there need to be a question in Tiny Tax asking if any goods and/or services are exported, or is this not required for micro entity ?
3. BANK DETAILS (BOXES 920 – 940)
The HMRC system asked for bank details of the company for any repayment due, however this question is not asked in TinyTax system.
The HMRC system asks questions & all details of company bank account are submitted for a potential repayment, but obviously TinyTax system leaves these boxes blank.
Question: Does TinyTax need to add a repayment bank account question to it’s system & populate this section on the form ?
I've been impressed with the review of the TinyTax system, but need to clarify the above discrepancies.
Thank you, Lloyd.
As the HMRC system is still operational until March we ran a comparison of a Corp Tax submission between TinyTax and HMRC systems. Everything aligned apart from 3 x areas when the final CT600 form is created, please see below:-
1. TAX CALCULATION FIELD (BOXES 330 – 425)
The tax amounts for 2024 & 2025 are calculated correctly in boxes 345 & 395 respectively and align with HMRC system, these amounts show the full calculation amounts due including pence.
However, a discrepancy occurs in box 430 for total Corporation Tax due (the box states this is a total of boxes 345, 360, 375, 395, 410 and 425), however when it’s calculated in box 430 the figure shown is a rounded down figure with no pence. The HMRC system shows the full amount due including pence.
This has a roll-on impact through the remainder of the submission wherever the total tax due is referenced, such as boxes 440 (Corporation Tax chargeable), 475 (Net Corporation Tax liability), 510 (Tax chargeable).
Question: Shouldn’t the Tax due be the actual full amount including pence ?
2. EXPORTER INFORMATION (BOXES 616, 617 & 618)
This field asks if the company export goods and/or services to individuals, enterprises or organisations outside the United Kingdom (UK).
This is a question asked in the HMRC system but not on TinyTax. We advised on HMRC system we did not export any goods or services and box 618 (No – neither) was marked with a ‘X’.
Obviously as there is no such question in Tiny Tax system so all 3 boxes are blank.
Question: Does there need to be a question in Tiny Tax asking if any goods and/or services are exported, or is this not required for micro entity ?
3. BANK DETAILS (BOXES 920 – 940)
The HMRC system asked for bank details of the company for any repayment due, however this question is not asked in TinyTax system.
The HMRC system asks questions & all details of company bank account are submitted for a potential repayment, but obviously TinyTax system leaves these boxes blank.
Question: Does TinyTax need to add a repayment bank account question to it’s system & populate this section on the form ?
I've been impressed with the review of the TinyTax system, but need to clarify the above discrepancies.
Thank you, Lloyd.
1 Comment
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1. Box 430 (Tax Calculation Field)
The tax amounts shown in our form interface are rounded for display purposes, but the actual figures submitted to HMRC include the full amount with pence. You can verify this by viewing the Tax Computations document before submission - this shows the precise values (e.g., £16,852.62) exactly as they'll be sent to HMRC. The underlying CT600 XML submission also contains the full precision.
2. Exporter Information (Boxes 616-618)
This section is optional in HMRC's CT600 schema. TinyTax is designed for micro entities who typically don't export goods or services, so we don't ask this question.
3. Bank Details (Boxes 920-940)
Bank details are only required if your company is claiming a tax repayment. Since most micro entities owe tax rather than receive refunds, we don't collect this. If you're ever due a repayment, HMRC will contact you separately to arrange payment.
In short: HMRC's online tool asks about everything to cover all company types, while TinyTax streamlines the process for micro entities by focusing on what's required. Your submission will be fully accepted.