BUENAVENTURA MINING CO INC (ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory)

(a)

The Group recognizes the effects of timing differences between the accounting and tax basis. This caption is made up as follows:

											Credit (debit) to
					Credit (debit) to				Credit (debit)		consolidated
			Credit (debit) to the		consolidated				to the		statements of
			Consolidated		statements of other		As of		Consolidated		other		As of
	As of January 1,		statement of		comprehensive		December 31,		statement of		comprehensive		December 31,
	2016		profit or loss		income		2016		profit or loss		income		2017
	US$(000)		US$(000)		US$(000)		US$(000)		US$(000)		US$(000)		US$(000)

Deferred asset for income tax included in results
Tax - loss carryforward		78,409		14,641		-		93,050		1,889		-		94,939
Difference in depreciation and amortization rates		52,377		8,506		-		60,883		734		-		61,617
Provision for closure of mining units, net		32,644		6,894		-		39,538		5,030		-		44,568
Impairment loss of long-lived assets		5,185		2,407		-		7,592		2,328		-		9,920
Environmental liability for Santa Barbara mine		1,556		13		-		1,569		(273)		-		1,296
Other minor		14,866		(1,785)		-		13,081		1,082		-		14,163
		185,037		30,676		-		215,713		10,790		-		226,503

Less - Allowance for deferred asset		(18,166)		(18,846)		-		(37,012)		(1,898)		-		(38,910)
		166,871		11,830		-		178,701		8,892		-		187,593

Deferred asset included in retained earnings
Derivative financial instruments		2,441		-		(1,301)		1,140		-		7,963		9,103
		169,312		11,830		(1,301)		179,841		8,892		7,963		196,696

Deferred assets for mining royalties and special mining tax included in results
Exploration expenses		(326)		364		-		38		(38)		-		-
Other minors		185		(180)		-		5		118		-		123
		(141)		184		-		43		80		-		123
Total deferred asset		169,171		12,014		(1,301)		179,884		8,972		7,963		196,819


Deferred liability for income tax included in results
Effect of translation into U.S. dollars		(73,537)		3,012		-		(70,525)		24,502		-		(46,023)
Differences in amortization rates for development costs		(32,304)		(19,484)		-		(51,788)		6,095		-		(45,693)
Other minors		(34,582)		(9,403)		-		(43,985)		(33,618)		-		(77,603)
		(140,423)		(25,875)		-		(166,298)		(3,021)		-		(169,319)

Deferred liability for mining royalties and special mining tax
Other minors		164		(199)		-		(35)		(126)		-		(161)
		164		(199)		-		(35)		(126)		-		(161)
Total deferred liability		(140,259)		(26,074)		-		(166,333)		(3,147)		-		(169,480)

Deferred income tax asset, net		28,912		(14,060)		(1,301)		13,551		5,825		7,963		27,339

BUENAVENTURA MINING CO INC | CIK:0001013131 |

ifrs-full:DisclosureOfTemporaryDifferenceUnusedTaxLossesAndUnusedTaxCreditsExplanatory