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Small and medium business | Business Central, N...
Answered

Cannot get 100% bonus depreciation on fixed asset to work in year 1

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Posted on by 14
Hello Dynamics community,
 
One of my clients in the USA has a fixed asset purchased on January 1, 2022 for $48,101.61. For 2022, there is 100% bonus depreciation.
I have set up a BONUS depreciation book. I know it is set up properly because bonus depreciation is calculating correctly when testing for vehicles purchased in other years where the bonus depreciation rate is 80%.
 
The problem... I have tried every which way to get 100%% bonus depreciation and $0 of normal depreciation. I cannot get it to work.
Here are the various setups that I tried which did not work:
  • Straight-Line with a Fixed Depr. Amount: BC calculated 100% bonus depreciation plus an extra amount for the fixed depreciation amount (in other words, calculated more depreciation than the cost of the fixed asset - if I posted this journal, the book value would be negative)
  • Straight-line with a depreciation starting date and depreciation ending date: nothing calculated, did not create any journal
  • Manual depreciation: nothing calculated, no journal created
  • User-Defined with a Depreciation Table Code: if the depreciation table is set up to have $0 depreciation in the first year, then nothing calculates when running calculate depreciation. If I use a depreciation table that does have amounts in the first year then it calculates 100% depreciation plus an additional amount of depreciation based off of the Depreciation Table setup.
  • Declining Balance 1: nothing is calculated and no journal lines created.
Business Central should calculate $41,101.61 of bonus depreciation and $0 of regular depreciation.
Is it possible to get this to work in this way? 
 
Bonus depreciation rate is 100% for any fixed assets placed in service after 1/20/2025 (due to One Big Beautiful Bill Act), so we will have a problem getting bonus depreciation to work for a lot of fixed assets!
 
 
I have the same question (0)
  • Suggested answer
    Teagen Boll Profile Picture
    3,567 Super User 2026 Season 2 on at
    Yes that's possible. I would start from the beginning and make sure all your settings are correct.
     
    1. Make sure you have two depreciation books - A company book and a BONUS book. The bonus book should have GL Integration disabled like this (company book it should be enabled):
     
    2. In your fixed asset master card make sure both depreciation books are assigned appropriately:
     
    3. You need to fully acquire the asset in both books before any depreciation is calculated. Above in my screenshot you can see the book value is 0$ for the bonus book. I need to acquire this in the Fixed Asset Journal first. Also make sure to set one of them as the "Default Depreciation Book" - this should be the one going to the G/L.
     
    4. Once done you can then calculate depreciation normally. BONUS book should be in the fixed asset journal and Company book will be integrated with the G/L in the Fixed Asset G/L Journal.
     
    See example for the BONUS book:
    And the company book in the Fixed Asset Journal:
     
    Hope that helps.
     
    Best,
    Teagen Boll
    Social: LinkedIn
  • Suggested answer
    YUN ZHU Profile Picture
    102,765 Super User 2026 Season 2 on at
    Hi, hope the following helps.
    Business Central 2026 release wave 1 (BC28.1): Enable Investment Boost for fixed assets (Bonus Depreciation Method)
     
    Thanks.
    ZHU
  • Suggested answer
    OussamaSabbouh Profile Picture
    18,722 Super User 2026 Season 2 on at
    Hello,
    Standard Business Central does not have a general US bonus depreciation calculation feature in the base fixed-assets module; it calculates the regular depreciation method assigned to the FA depreciation book, which explains why setting a 100% bonus together with Straight-Line can generate both amounts. If the bonus calculation works at 80%, that functionality is likely coming from a US localization or an extension, and it may not correctly reduce the remaining depreciable basis to zero at 100%. For a fully expensed asset, the practical approach is to post the full eligible amount manually as Depreciation in the bonus/tax book and not run normal depreciation for that book, or have the extension corrected so the bonus amount is capped at the remaining depreciable basis and normal depreciation is skipped when the bonus reaches 100%. Also, please confirm the expected amount: the acquisition cost stated is $48,101.61, but the requested bonus amount is $41,101.61.
     
    Regards,
    Oussama Sabbouh
  • Suggested answer
    Kamal Khakhkhar Profile Picture
    3,601 Super User 2026 Season 2 on at
     hii there form V28.1 there is new feature added from Microsoft through you can calculate additional Depreciation and deduct as per requirement .

    check below links for reference.
    https://yzhums.com/73564/

    https://youtu.be/LKt0K-EdiX0?si=DRfdwkk-0Oh981AM



    if you found answer mark it verified.

    Thank You.
    Kamal Khakhkhar.
  • Suggested answer
    Kamal Khakhkhar Profile Picture
    3,601 Super User 2026 Season 2 on at
    hii there  for this from Business central v 28.1 Microsoft added new feature through that you can calculate additional Depreciation .

    for that you can update setup as per below links . check and please let me know if you found any other query . 


    https://youtu.be/LKt0K-EdiX0?si=DRfdwkk-0Oh981AM
    https://yzhums.com/73564/



     
    if you found answer mark it verified .

    thank you.
    Kamal Khakhkhar

     
  • Verified answer
    tigergold Profile Picture
    14 on at
    Hello all,
     
    I reviewed all the answers. I tested based off of Teagen Boll's instructions, but I got the "No journal lines were created" message. So it did not work. 
     
    I reviewed OussamaSabbouh's answer and it seems to be the correct answer. I believe that 100% bonus depreciation only in the first year is not working in the US environment. We will make a small customization to get it to work the way it should.
     
    Thanks!
    Ted
  • Suggested answer
    Teagen Boll Profile Picture
    3,567 Super User 2026 Season 2 on at
    Hi Ted,
     
    Oussama's answer isn't fully correct. You can absolutely 100% depreciate a fixed asset in the first year in the US localization. In US localization you can have as many depreciation books as you want that are not GL related. I have clients I work with that fully depreciate assets in the year or may even track write-downs and appreciations in a non GL related depreciation book. I have done that in the screenshots in a US environment too. You just need to make sure you haven't missed any setup for your depreciation books. If you use more than one depreciation book you need to make sure that the asset is properly acquired in both books, there is a default book set and the GL integration is only enabled for one book.
     
    If you are having issues with the setup you may need to work with your partner for assistance.
     
    Best,
    Teagen Boll
    Social: LinkedIn

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