In the year of acquisition, etc.
De terminologie is wat vrij in de zin verwerkt, maar de woorden die ik gevonden heb lijken me duidelijk.

The Dutch sentence is terrible!
"tijdgelang" does not exist as a tzerm (VanDale / Kramer's). What I think they mean, is a combination of
gelang = according to + time.
If yopu add this to "verkrijging" then you arrive at "according to the year of acquisition". And "afschrijving" is a write-off.

HTH

There is no mention of the term "tijdgelang" in any of my dictionaries.

Alternatives are:

naar gelang de tijd

naar gelang van de tijd

Two bilingual sites with the terms:

Terms of payment

1. With regard to prices, the rates and/or fees to be charged, Target Reactions will set its own rates in proportion to time and circumstances. All rates and/or fees indicated are subject to VAT at the prevailing rate and may be altered without notice
http://www.targetreactions.com/business/
terms.htm

Overwegende dat als gewicht het koud geslacht gewicht in aanmerking wordt genomen; dat dit gewicht wordt berekend door op het geconstateerde gewicht een nader te bepalen verwerkingscoëfficiënt toe te passen; dat deze coëfficiënt kan variëren naar gelang van de tijd die verloopt tussen het steken van het varken en de weging; dat deze coëfficiënt derhalve dienovereenkomstig moet kunnen worden aangepast.
http://europa.eu.int/eur-lex/nl/lif/dat/1985/nl_385R2967.htm...

Whereas 'weight' is taken to mean the weight of the cold carcase; whereas this is calculated by applying to the result of the weighing a conversion coefficient to be determined; whereas that coefficient may vary depending on the time between the weighing and the sticking of the pig; whereas an adjustment of the coefficient should therefore be allowed;

Betalingsvoorwaarden

Voor wat betreft de in rekening te brengen tarieven en/of honoraria stelt Target Reactions, naar gelang van tijd en omstandigheden, zijn eigen tarieven vast;
http://www.targetreactions.nl/business/terms.htm.

Translation of the terms:

according to time
in proportion to time
depending on time

English phraseology:

written off in required time frame
written off after a lapse of time
written off over time
write off in good time

Examples:

EComForum
... accounting, the difference between the price paid and the book value of the acquired
company's net assets is written off over time as an annual expense. ...
www.ecomforum.org/fasb.html

SocietyGuardian.co.uk | Society | Stormy waters
... of a charity's expenditure and that investment in fundraising should be written off
over time in the same way as capital expenditure. "If a charity invests 2m ...
www.societyguardian.co.uk/charitymanagement/story/0,8150,42...

In conclusion, my suggestion is as above.

Hope this helps a bit.

Ik denk dat men hier met "naar tijdgelang afschrijven" eigenlijk "lineair afschrijven" bedoelt. Eurodicautom geeft:

lineaire afschrijving:
straight line depreciation
straight-line method
depreciation straight line method

Definitie (eveneens volgens Eurodic):
a method of computing depreciation and consists of making provisions by which the sums,actually or theoretically set aside for depreciation,are computed at an equal periodic rate by bividing the depreciable base by the number of years or period of expected life.Thus,with a base of 1000 dollars and an estimated life of 10 years,the annual rate would be 10 per cent to produce an annual charge of 100 dollars and a total of 1000 dollars in 10 years

Groeten,
Carla