25	DEFERRED INCOME TAX

Deferred income tax is broken down by its estimated reversal period as follows:


	2016			2017
Deferred income tax asset:
Reversal expected in the following 12 months		86,990			73,883
Reversal expected after 12 months		340,018			362,814

Total deferred tax asset		427,008			436,697

Deferred income tax liability:
Reversal expected in the following 12 months		(166	)		(5,583	)
Reversal expected after 12 months		(73,003	)		(66,889	)

Total deferred tax liability		(73,169	)		(72,472	)

Deferred income tax asset, net		353,839			364,225

The gross movement of the deferred income tax item is as follows:


	2015			2016			2017
Deferred income tax asset, net as of January 1		58,723			48,682			353,839
Credit to income statement (Note 30)		(175	)		263,806			42,779
Adjustment for changes in rates of income tax		(2,008	)		17,105			1,951
Credit (charge) to other comprehensive income		(7,298	)		15,004			—
Tax charged to equity		—			159			—
Acquisition of a subsidiary		—			10,363			(12,340	)
Acquisition of joint operation		1,476			—			(16,804	)
Other movements		(2,036	)		(1,280	)		(5,200	)

Total as of December 31		48,682			353,839			364,225

The movement of deferred tax assets and liabilities in the year, without taking into account the offsetting of balances, is as follows:


Deferred income tax liability	Non-taxable income			Difference in depreciation rates		Fair value gains			Work in Process			Difference in depreciation rates of assets leased			Receivables from local Government		Capitalized Financing cost			Purchase price allocation			Others			Total
At January 1, 2015		14,190			36,515		13,732			14,368			10,445			—		—			—			21,534			110,784

(Charge) credit to P&L		—			2,791		15,338			16,393			—			9,986		15,178			—			1,347			61,032
(Charge) credit to OCI		—			—		7,016			—			—			—		—			—			281			7,297
Reclassification of prior years		(14,190	)		5,849		(5,402	)		(6,038	)		(10,445	)		15,557		—			—			(11,354	)		(26,020	)

At December 31, 2015		—			45,155		30,684			24,723			—			25,543		15,178			—			11,808			153,093

(Charge) credit to P&L		—			16,595		13,587			(16,481	)		—			3,324		6,240			—			2,619			25,883
(Charge) credit to OCI		—			—		(15,348	)		—			—			—		—			—			—			(15,348	)
Reclassification of prior years		—			—		(28,923	)		—			—			—		—			30,187			(1,264	)		—
Adquisition of subsidiary (Adexus)		—			—		—			—			—			—		—			(3,069	)		—			(3,069	)

At December 31, 2016		—			61,750		—			8,242			—			28,867		21,418			27,118			13,163			160,559

(Charge) credit to P&L		—			104,101		—			(5,712	)		—			3,322		(1,473	)		(11,780	)		(3,724	)		84,734
Sale of subsidiary (GMD S.A.)		—			—		—			—			—			—		—			—			(81	)		(81	)

At December 31, 2017		—			165,851		—			2,530			—			32,189		19,945			15,338			9,358			245,211


Deferred income tax asset	Provisions			Accelerated tax depreciation			Tax losses			Work in Process			Accrual for unpaid vacations			Investments in subsidiaries			Impairment			Tax Goodwill			Other			Total
At January 1, 2015		25,806			23,350			59,036			23,941			16,973			11,769			—			—			8,636			169,511

Charge (credit) to P&L		342			4,076			26,661			18,623			772			(13,832	)		—			17,522			4,646			58,810
Adquisition of subsidiary (Coasin)		—			—			—			—			—			—			—			—			—			—
Adquisition of subsidiary (Morelco)		—			—			—			—			—			—			—			—			—			—
Others		—			—			—			—			—			—			—			—			—			—
Reclassification of prior years		(5,199	)		(12,534	)		5,615			(19,544	)		(2,768	)		2,063									5,623			(26,744	)

At December 31, 2015		20,949			14,892			91,313			24,103			14,977			1,476			—			17,522			16,463			201,775

Charge (credit) to P&L		84,571			1,489			51,163			(6,489	)		(2,005	)		(312	)		172,052			3,003			3,322			306,794
Charge (credit) to equity		159			—			—			—			—			—			—			—			—			159
Cargo (abono) a ORI		—			—			—			—			—			—			—			—			(343	)		(343	)
Adquisition of subsidiary (Adexus)		—			—			10,607			—			—			—			—			—			(3,313	)		7,294
Others		—			—			—			—			—			(556	)		—			—			(724	)		(1,280	)

At December 31, 2016		105,679			16,381			153,083			17,614			12,972			608			172,052			20,525			15,487			514,398

Charge (credit) to P&L		(12,614	)		79,637			(8,555	)		21,873			2,166			118			28,593			(112	)		18,358			129,464
Charge (credit) to equity		(8,882	)		—			—			—			—			0			(7,493	)		—			(347	)		(16,722	)
Reclassification		(30,901	)		—			—			—			—			(726	)		31,627			—			—			—
Sale of subsidiary (GMD)		(683	)		(9,367	)		(438	)		—			(1,697	)		—			—			—			(236	)		(12,421	)
Others		(160	)		—			(1	)		—			(1	)		—			1			—			(5,123	)		(5,284	)

At December 31, 2017		52,439			86,651			144,089			39,487			13,440			0			224,780			20,413			28,139			609,435

At December 31, 2017, total tax losses amounted to S/494.8 million of which S/83.9 million are expected to be applied in 2018, S/10.3 million in 2019 and the remaining balance in the following fiscal years.

Tax goodwill arose from a tax credit balance resulting from the reorganization of Chilean subsidiaries in 2014 under Chilean tax laws and regulations. In 2016, the arbitration process relating to Project Collahuasi was completed and an additional payment was determined to be paid to the Chilean subsidiary selling party; which resulted in a higher balance in this item.